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UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 UNIVERSITY MATHEMATICS 3rd edition S. Zoch c. 2011 c. 8/15/2007 10 A.M. 1 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 Introduction Topics cover most of basic arithmetic, introductory and intermediate algebras, university and college algebra with a little geometry, trigonometry, calculus, and probability including statistics. Thanks to all the great students over all the decades for your good study habits. These notes are for you and all others interested in the right understanding and application of physical sciences, mathematics, education, business, philosophy, technology and arts. Under Revision t(8/17/12) edit Index Logic p.65-66 Set Theory p.45-60 Probability and Statistics p.122-143 1a. Integers and whole numbers Let R be the set of real numbers and hold that numbers so that N 1 , 2 , 3 ,... . N is the set of natural The set of integers is the collection denoted and equal to the following Z x : x N 0 x : x N with scalar multiplication and 1 , 1 R 1 x x where is real . It is written as the set Z ..., 3 , 2 , 1 , 0 ,1 , 2 , 3 ,... . An Integer is a discrete unit, the deficit of a unit, or its absence represented by expression as a real number (written as an Indian numeral with an implied base of ten) that is not a fraction in its reduced form with any denominator other than the real number one. 2 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 The Set of Integers is the collection of all positive and negative natural numbers including the number zero. 7 7 21 Z . 3 1 so that the number minus seven is an integer. 0 0 0 0.010 0.010 00.000 0 0 1 0 1 10 1 0 Z 5 . so that the number zero is an integer. 7 7 7 7.010 7.0 07.000 7 7 1 7 14 Z 1 10 1 2 so that the number seven is an integer. 2.7 is not an Integer. -3.17 is not an integer. The number ½ is not an integer. The number 7/3 is not an integer. The number -11/4 is not an integer. No irrational number is an integer whence pi is not an integer. Note that 2 1 0 1 2 7 710 7.010 7.0 0 10 0 10 7 10 0 10 0 10 is the base ten decimal expansion of the integer seven. No proper fraction is an integer. Any improper fraction is non integer when it is reduced and the denominator is not the number one. 7 7 0 7 0 7 0 7 for all x 0 0 0 x R with x 0 because and the fundamental theorem of Arithmetic that is a case of the fundamental Theorem of Algebra. 3 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 Integers are usually not written as fractions and represent the absence, deficit or presence of whole amounts. Any Integer can be written as a fraction by expressing it with a one in the denominator. Laws of signs Please know your laws of sign very well as they are relatively easy to learn and always applicable even required with the use of a calculator. There are two laws of signs each with two components so that the total number of laws is four. I. MULTIPLICATION AND DIVISION-Optics Laws of Signs Given an expression to multiply or divide two real numbers : A. If they have the same signs the result is positive B. If they have unlike signs the result is negative. In these cases one can think of images and their negatives in film production. The cases of multiplication: 3 x 4 = 12 3 x - 4 = -12 -3 x 4 = -12 -3 x - 4 = 12 And for division: 12/3=4 -12/3=-4 12/-3=-4 -12/-3=4 2. ADDITION AND SUBTRACTION-Accounting Laws of Signs Given an expression where no multiplication or division is indicated only to add or subtract two real numbers: A. If they have the same signs combine them and give the result this similar sign. B. If they have unlike signs then take their difference and give this result the sign of the number which is farther from zero on the real line. In this case one can think of owing as negative and having as positive. 4 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 2+3=5 2 - 3 = -1 -2 + 3 = 1 -2 - 3 = -5 2a. Fractions and proportions Given a fraction of the form them into b a b it means take a unit or units and divide it or number of equal parts and select Given a fraction of the form numerator and b a b where b a number of them. is not zero a is called the is called the denominator. We never divide by zero and if it is the case we say the expression is undefined. A fraction is called proper if the numerator is less than the denominator. A fraction is called improper if the numerator is greater than the denominator. A fraction is reduced to lowest terms or reduced if the numerator and denominator have no common factors other than the number one. A fraction is simplified if it is reduced. Any answer that is a fraction must always be reduced. A fraction can be reduced and proper or improper at the same time. Proper and improper have nothing to do with a fraction being reduced. 5 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 Theory Any improper fraction can be written as a mixed number. Theorem of Arithmetic Given two real numbers and s d numbers q and s d q r d . q is real called the quotient and r with d is not zero then there exists real so that r is real called the remainder. If a fraction is improper it may also be reduced at the same time. 7 5 is reduced and may be written as the mixed number 1 2 5 or from the fundamental theorem 1 2 . 5 If you are working with fractions make everything look like a fraction. In equations we can clear out the fractions and with expressions we may not be able to clear them out. Cancellation Property Let a, x, and b be free and b is not zero. ax bx xa bx ax a xb b Given a fraction of the form a b and b a a b where b is not zero it also means . 6 UNIVERSITY MATHEMATICS t(1994) Given a fraction of the form a b a b a b a b S. Zoch c. t( x )2012 then for calculations. Distribute negative numbers across terms where they are indicated by their position in front of parenthesis. Given a fraction multiplied by a variable it may also be written or calculated as numerator of fraction times variable divided by the denominator of the fraction. a ax x b b PROPERTIES OF FRACTIONS Let a, x, c. d, and b be free and b and d are not zero. a 1 a a 0 where a a 1 0 0 a where a 0 0 0 1 a 0 undefined 0 0 undefined 7 UNIVERSITY MATHEMATICS t(1994) a c b d a c b d a d b c a c b d ad bc bd a c b d ad bc bd S. Zoch c. t( x )2012 ac bd ad bc The formulas above do not require the least common denominator or LCD to use them. In all cases a common denominator can be used which may be the product of denominators given as easily as the least common denominator to accomplish all tasks such as clearing fractions from forms of equations and adding or subtracting fractions in expressions. Least Common Denominator or LCD Given some fractions their least common denominator is the amount that is the smallest or has the least number of prime factors so that each denominator of every fraction will divide it evenly. 3a. Decimals and basis Any real number can be converted into a decimal number with any natural base (usually base of ten) and every decimal number can be converted into a real number. The place values of decimal numbers is extremely important knowledge as it helps us understand their real values and such speech is required to write or translate decimal numbers into whole numbers, proper fractions, or improper fractions that can be stated as mixed numbers. 8 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 The significance of place values is relevant for their understanding and skill. When we add or subtract real numbers we must line up place values and move down the decimal in our work directly for the result. When we multiply two decimal numbers we multiply as normal with the distribution times table method yet to produce the correct result or answer take the decimal from the right end of the response and move the decimal to the left the total number of places that is the sum of all significant place values to the right of the decimals in each given factor (that was multiplied) and the correct answer can be hand written. When we divide two real numbers we must divide by a whole number. When trying to create a decimal number from a proper or improper fraction make the numerator in the long division box look like a decimal by writing it like a decimal with a point and as many zeros as you may need for rounding or termination. When working with decimals answers are probably going to look like decimals and when working with fractions answers may probably going to look like fractions. As the form of truth is not always unique in its expression and truth can be the satisfaction of directions some problems have only one right answer yet many have a multitude of equally valid answers that can take many equivalent forms. It is important for students to be able to recognize valid forms of truth in many instances and also to recognize its equivalent formats or statements in all academic areas. DECIMALS OR BASE TEN REPRESENTATIONS 7 7 1 7.010 7.0 0 10 0 10 7 10 0 10 0 10 2 10 1 0 2 is the base ten decimal expansion of the integer seven. Let n and m be whole numbers. Select a base ten decimal number according to the following expansion: a 10n a 10n1 ... a 102 a 101 a 100 b 101 b 102 ... b m 10m n n 1 2 1 0 1 2 9 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 Any decimal number can be converted into a real number and any real number can be converted into a decimal number. You should know the names and meanings of the base ten decimal positions especially the ones to the right of the decimal. Always question what is the given statement or given data of a mathematics problem. Remember there is a big difference between an expression and an equation. A solution is always an equation. A simplification of an expression can be another expression or written as an identity equation. ROUNDING AND PLACE VALUES BINARY NUMBERS OR NON BASE TEN REPRESENTATIONS Let n and m be whole numbers. Select a binary number or base two number according to the following expansion: a 2n a 2n1 ... a 22 a 21 a 20 b 21 b 22 ... bm 2m n n 1 2 1 0 1 2 Computers and machines use base two, eight, or sixteen expansions as these are powers of two so that the dichotomous nature of electronic components can be represented as on or off or one or zero. 4a. Exponents, square roots and scientific notations and rational exponents 10 UNIVERSITY MATHEMATICS t(1994) S. Zoch Let x be free and n is a fixed whole number then x x So that x n 2 2 2 2 8 , 5 5 5 25 2 3 n n x x x x for all i=1,2,3,…,n or i x 1 1 x n so that 2 3 3 2 1 x x x x c. t( x )2012 n 1 2 3 x n with x with n factors of x. and 3 3 3 3 27 3 . 13 1 . 2 8 A number is in scientific notation if it is written as a product of a number between one and ten or one itself and an integer power of ten. y If n x then n y x . Theory Exponents There are many ways to work with exponents. The hardest part of mathematics is making all the choices yet your answer in the end should be equivalent to any one else’s no matter what methods you use or choices you make it your work does not violate axioms, definitions, properties or theorems yet this is the beauty and teaches us to make viable decisions on our own. An answer is simplified if it has no negative exponents, numeric bases have been evaluated and if it is a fraction then it is reduced. Let x and y be free. x x 1 0 0 undefined x 1 0 when x 0 . 11 UNIVERSITY MATHEMATICS t(1994) x x x m n S. Zoch c. t( x )2012 m n xm n xmn x y x n m n y x m n 1 x n n x y y x n RADICALS OR RATIONAL EXPONENTS and Square Roots Mathematics, sciences and music have many standards and agreement that are held by everybody no matter who they are, where they are from and what they may otherwise believe so that this demonstrates that worldwide agreements exist as these held valid in many cases for thousands of years and will be upheld in the future such as the order of operations agreement which makes expressions well defined and computable and Greek letter pi represents the value of any circles circumference divided by its diameter. If y x n m If y y If 5 If n x then m n x n y x we have x x 25 then then y and if n is even then 2 x 0 and then 2 y x . . . 5 25 2 1 x x 0 . Scientific Notation 12 UNIVERSITY MATHEMATICS t(1994) 2.718 10 3 27.18 10 4 S. Zoch c. t( x )2012 is in scientific notation and represents the number 0.002178 . is not in scientific notation because 27.18 is not between one and ten and not the number one and represents number 0.002178 . 2 0.2718 10 is not in scientific notation because 0.2718 is not between one and ten and not the number one and represents number 0.002178 . Given a number in scientific notation move the decimal to the left the number of places indicated by the integer power of ten if this power is negative or to the right the number of places indicated by the integer power of ten if this power is positive to find its real value. 5a. Ratio and Proportion RATIOS AND PROPORTIONS A ratio is an expression of a fraction. The ratio of a to b is denoted a/b or a : b . A proportion is the statement or equation that two fractions or ratios are equivalent. If a c b d then a d b c . Example a/b =c/d ½ = 3/6 so (1)(6) = (3)(2) If a/b =c/d then ad = bc . 13 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 THEOREM OF ALGEBRA Given any two non equal rational numbers a and b then a/b= q+r/b where q is real called the quotient and r is real called the remainder. Example 5/3= 1 + 2/3 If the remainder is zero or r = 0 then we say the division is even and b and q are factors of a as a / b = q . We have 12/4=3 because 12/4=3+0/4 as q=0 . If a/b=c then a=bc and we say b and c are factors of a. Given any real number x and any natural number n we say that nx is a multiple of x. Given x = 3 then its multiples are: 3 6 = (1)(3) = (2)(3) 9 12 … = (3)(3) = (4)(3) PRIME NUMBERS A natural number greater than one is prime if and only if it can be written as a multiplication with the natural numbers one and itself and this is the only way to do it. Not every prime number is odd because two is prime. 14 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 Not every odd number is prime because nine is odd and not prime. It is exceedingly hard to tell if a random large number is prime. This is an open question of number theory. UNITS, METRICS, AND CONVERSIONS Units are arbitrary conventions created by people to quantify properties from observations using scientific studies and measurements such as physics, chemistry, and biology. Use of the british system only promotes the imperialist machinations of European and english conquerors in the Americas specifically in the United States of America. The metric system is a modern and almost worldwide standard used in many countries such as Mexico and most countries overseas. Every student should learn the metric system and know how to convert between many different units and systems. UNIVERSAL CONSTANTS The amounts of pi and e are universal constants. 6a. Percentages and rounding Percents and numbers are not the same things. Percents have the percent symbol % or unit and numbers do not. Any real number can be converted into a percent and every percent may be converted into a real number. 25%=0.25 25% is a percent and 0.25 or ¼ are the real numbers it expresses. To convert a percent into a real number either move the decimal twice to the left or multiply it by 1/100 and remove the percent symbol. To convert a real number into a percent move the decimal twice to the right or multiply by 100 and remove the percent symbol. 15 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 Percent formula A P B 100 A is the amount (it is not a percent). B is the base (it is not a percent and always comes after the word of in problems) P is the percent (the formula converts the percentage into a real number) 7a. Averages (means, medians, and mode) basic statistics The outcomes from an experiment of statistics is called the data set S. The mean of a data set is the average of its elements or that is add all elements and divide by the number of elements. The mode of a data set S is the most frequently occurring element(s) or does not exist if there is no most frequently occurring element of the given data set S. 16 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 A data set may not have a mode or may have one or a finite number of modes. The median of a data set S with an odd number of elements is the middle element when the elements of S are listed from left to right in an ordering. If the number of elements of a data set S is even then its median is the average of the middle two elements where all elements of S are listed in order from left to right. It is interesting to note that when the number of elements of a data set S is even that its median may not be included in the data set S itself. If the number of elements of a data set is odd its median is always included in the data set. Probability is the use of combinatorics, set theory, and lattice theory and can also be considered with subsets of the Euclidean N Spaces. Probability is a young area of mathematics and has existed only for the last 200 years or so at this point and therefore many text books vary greatly with definitions. Probability has its most accurate applications in quantum theoretical physics and is used in actuarial sciences, economics, game theory, numerical analysis, and chemistry. Probability produces a source of understanding random events which may not be comprehended in their totalities. Experiments and Sample Spaces The sample space of any experiment for probability is a set of real numbers or non real elements or a set of n tuples from a product space of sets which may or may not contain real numbers and any have other unreal elements called a data set or sample space . Events are cases of outcomes for given experiments. Probability uses set theory, ratios, and the fundamental principles of counting (combinatorics) to describe chances or likelihoods for given events or experiments in theory. Probability uses thought experimentation or creative imagination. 17 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 Any probability of an event for a given experiment is the ratio of number of ways the event may occur as an outcome from the experiment to the total number of ways the experiment itself may conclude. FUNDAMENTAL PRINCIPLE OF COUNTING Permutations and Combinations A permutation is a list of elements where the order from left to right makes a difference and the number and type of elements listed does matter. A combination is a list of elements where the order from left to right makes no difference and the number and type of elements listed does matter. The number of permutations is always greater than or equal to the number of combinations for the same given elements. When creating the sample space of a given experiment it is best to consider does the order of choices when considering outcomes make a difference or no difference and is there replacement or no replacement when making choices for steps or stages to derive outcomes (that is can the same choice be made more than once at any step (replacement) or only once ( no replacement) at any step). Empirical vs. Theoretical Theoretical Probability We assume for any given set A that all equivalent forms of any element x of A are only counted once or considered as equivalent when we list or write the elements of A. Empirical Probability or Statistics We assume for any given set A that all equivalent forms and quantities of any element x of A are all listed and counted each time they occur in A when we consider and write the elements of A. The set A is called a data set and is a subset of the real numbers or some product space of real numbers. E represents the collection of all outcomes of experiment e given some specific condition(s) on outcomes of e that may or may not be equal to all possible outcomes of e with its generalized conditions represented by S. 18 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 INCLUSIVE AND EXCLUSIVE EVENTS Two events E and F are mutually inclusive if their set theoretic intersection is not empty. Two events E and F are mutually exclusive if their set theoretic intersection is empty. CONDITIONAL PROBABILITIES Statistics Statistics is the empirical application of theories from probability. Statistics is one of the youngest areas of mathematics and has existed only for the last 70 years or so at this point and therefore many text books vary greatly with definitions and examples are usually numeric and complicated in nature. It is useful to know how statistics are used, manipulated, and interpreted . It is also useful to consider who is creating and using statistics as they can create bias in the experiments, results, interpretations, and applications. The sample space of any experiment for statistics is always a set of real numbers or a set of n tuples from a product space of real numbers called a data set. Given any event or experiment which can occur as a series of steps or stages where at every step there is a finite number of choices to proceed to the next step then the total number of outcomes or conclusions to the event or experiment is the product of the number of choices which can be taken at each step or stage to conclude the event or experiment. Let N be the set of natural numbers. Given a set Let A let U,U ,U 1 2 3 A be its cardinality [s]. ,...,U n be sets and n is a natural number then we can define a new set called their product as 19 UNIVERSITY MATHEMATICS t(1994) n U U U U i 1 i 1 2 3 ... U n S. Zoch x , x ,..., x : x U 1 2 n i i c. t( x )2012 for all i 1, 2,3,..., n . Given an event or experiment e that can be considered as a finite number of steps where at each step there are any number of choices or options define its sample space S as the collection of all outcomes of event e. Given a set A we define its power set W(A) as the set of all subsets from A. Given an event or experiment e where it can be considered as a finite number of steps n with n is a natural number and where at each step there is a set of choices or options. Let Ai be the collection of all options for the ith step of experiment e and define the sample space S of e as n S Ai i 1 x , x ,..., x : x A 1 2 n i i for all i 1, 2,3,..., n . Note that in the definition above the number of elements of any Ai may not be finite. Fundamental Principle of Counting Given an event or experiment e where it can be considered as a finite number of steps where at each step there are a finite number of choices or options then the total number of outcomes of experiment e is equal to the product of the number of choices for each step in e to complete the occurrence of event e. [e] Given an event or experiment e that can be considered as a finite number of steps n and assume at each step there are a finite number of choices or options define its sample space S as the collection of all outcomes of event e. 8a. Substituting values and equations 20 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 It may be true that the Universe does not always follow pemdas when calculating and/or evaluating expressions in nature. Pemdas is an agreement of man and woman so that the value of algebraic expressions is well defined and therefore also viable in computer calculations. It is true too that a computer may be programmed that would violate pemdas where computations of expressions are concerned and still be functional. Pemdas does demonstrate that we all can get along and agree no matter where we are from, what we believe otherwise, or what we look like all over the world for thousands of years where mathematics and sciences are concerned. Given an expression, equation, or inequality for any free variable, term, or any parenthesis imagine scraping it away or removing it and where it had been replace its absence by parenthesis. Imagine moving into this parenthesis or substituting a real number (given or evaluated), another expression or a variable and follow the order of operations and laws of signs. Parenthesis are required by an axiom when we use substitution and replace because one times anything is itself and anything raised to the 1st power is itself so that x x 1 x 1 and x x 1 x 1 . 21 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 Theory One of the most important skills in algebra is algebraic substitution and replacement. Using it allows us to correctly substitute values into formulas and accurately produce viable results as in economics, finance, and sciences with calculators and computers. I. MULTIPLICATION AND DIVISION-Optics Laws of Signs Given an expression to multiply or divide two real numbers : C. If they have the same signs the result is positive D. If they have unlike signs the result is negative. In these cases one can think of images and their negatives in film production. 2. ADDITION AND SUBTRACTION-Accounting Laws of Signs Given an expression where no multiplication or division is indicated only to add or subtract two real numbers: A. If they have the same signs combine them and give the result this similar sign. B. If they have unlike signs then take their difference and give this result the sign of the number which is farther from zero on the real line. In this case one can think of owing as negative and having as positive. PEMDAS is a worldwide agreement held so that arithmetic is well defined. 1. View only the amount contained by the inner most parenthesis, brackets, braces, under radicals, or inside absolute values. (Those which are inner most are contained by the most other sets of parenthesis, brackets, braces, radicals, or absolute values.) 2. Evaluate exponents only in these inner most. 3. Multiply or divide as it goes from left to right only in these inner most. 4. Add or subtract as it goes from left to right only in these inner most. 5. Repeat for what parenthesis contains the inner most amount from above until the expression is a single number expressed as a single term and unfactored. If there is nothing which contains the parenthesis or the steps yield a redundancy in the inner most then view the entire statement of the expression. Parenthesis Exponents Multiply or Divide ( as you view from left to right ) 22 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 Add or Subtract ( as you view from left to right ) Parenthesis, brackets, and braces all mean the same thing which is whatever amount is represented directly outside of and next to them (if no indication it is the number one or if a minus sign it is the number minus one) will be multiplied by what they contain and what they contain is raised to the 1st power unless otherwise indicated. A sign is only affected by an exponent if and only if it is contained inside parenthesis. 9a. Setting up equations and word problems Equality is called a relation. An equation is the statement that two expressions are equal. Equations always begin with the equal symbol showing and expressions never should begin with the equal symbol showing. Expressions turn into equations as we evaluate them or simplify. It is very important to recognize the difference between equations and expression as their direction statements usually are different. 1. Read the problem all the way through without stopping for totality before you begin to try to solve it. 23 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 2. Make a basic comprehension of the problem in real world terms so that you can reason a solution. 3. Draw any related pictures, diagrams, or figures if possible. Start to sketch out the problem. 4. List the given relevant or essential data on your paper with units and determine what information may not be relevant. 5. List any implied or given formulas and or equations on your paper. 6. Make sure all units are uniform. 7. Make a let statement to define the unknown or requested amount(s) as a variable and derive other unknown amount as expressions using this variable where required. 8. Create an equation which is equivalent to the word problem in Mathematics from our case in English. 9. Make sure the equation is of only one variable type so it can be solved. This may require substitutions. 10. Solve it. 11. Consider that all requested amounts are exhibited by re-reading the problem and that you have shown all required answers. Otherwise you may have to calculate more results. This may require you to re read the problem statement again. 12. Include units for answers where they are required. 13. Check your answer(s) and make sure it (they) appear to make sense to you. 14. Organize or arrange your results in a presentable manner clearly indicating your answer. Word problems can be stated in an unclear or ambiguous way so if this is the case try one interpretation and if it does not produce good results try another interpretation to produce logical and complete results. Never give up. Theory Given an equation with at most one free variable called x having nonzero coefficients then its solution set is the collection of all values or real numbers that can be substituted for x so that evaluation done by the order of operations and the laws of sign yields or produces a true statement. An equation is conditional if it has a finite number of solutions. An equation is a contradiction if it has no solutions. It will produce a false statement like 0=2 when you try to solve it and the answer is no solution. An equation is an identity if it has an infinite number of solutions. 24 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 It will produce a true statement like 0=0 when you try to solve it and the answer is all real numbers. Each equation has a left hand side and a right hand side. Let a and b be free algebraic expressions then we have any equation can be represented as the symbolic statement a=b . A math problem should have the two components of the direction and the given statement. The direction of an equation is usually to solve and the direction of an expression is usually to simplify. The number of equations is uncountably infinite and some equations cannot be expressed in finite space so we use variables to represent these equations. Given an equation it is called radical if there exists a free variable with an exponent that is non integer. Given an equation it is called rational if there exists a free variable with an exponent that is a negative integer. PROPERTIES OF EQUALITY If a = b then a + c = b + c . If a = b then a - c = b - c . If a = b then ac= bc. If a = b and c is not zero then a/c = b/ c . If a = b then b = a . NON LINEAR EQUATIONS 25 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 Quadratic Equations An equation of the form ax bx c 0 2 where a is not zero is called non linear or quadratic. Every quadratic equation is non linear. Every non linear equation is not necessarily quadratic. Quadratic equation implies it is non linear. Non linear equation does not imply it is quadratic. QUADRATIC FORMULA Given an equation of the form b b 4ac x 2a ax bx c 0 2 the solutions are given by 2 . PRINCIPLE OF ZERO PRODUCTS If the product of a finite number of factors is zero then any one of the factors could be zero. If ab=0 then either a=0 or b=0 . STEPS FOR SOLVING NON LINEAR EQUATIONS 1. Clear fractions in an equation by multiplying both sides by the least common denominator. or 2. Clear parenthesis by distributing. 3. Combine like terms on each side separately . 4. Decide if the equation is linear or non linear. 5. If it is non linear make a choice to collect all terms on one side and zero on the other side and accomplish this. 6. Factor the non zero side. 7. Set each factor to zero and solve these as linear equations. 8. If the non zero side will not factor and if the equation is quadratic then use the quadratic formula. 26 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 10a. Basic operations and polynomials and linearity An equation, expression, or inequality is polynomial with respect to a free variable if and only if any exponent of the free variable is a whole number, no base contains a free variable in its expression and it is not transcendental (or it is the real number zero or the zero equation identity) otherwise it is called non polynomial. W 0 ,1 , 2 , 3 ,... is the set of whole numbers. An expression which is a polynomial and a single term is called a monomial. Given a polynomial its degree is the greatest exponent or power of any free variable or the greatest sum of the exponents for all free variables if there are more than one. 2 Given the polynomial expression 3x it is a monomial because it is a single term and 3 is called the coefficient, x is called the base and 2 is called its exponent or power. Given an expression to add or subtract polynomials we follow the order of operations by distributions of one or minus one to their terms then collect like terms. Given an expression where it is indicated to multiply two other expressions of polynomials we distribute every term in the first factor to every term in the second factor then collect like terms if possible. Dividing polynomials requires understanding of the Fundamental Theorem of Algebra and the long division algorithm. Theory THEOREM OF ALGEBRA Given two polynomials polynomials q s d . q r d and r s and d with d is not zero then there exists so that 27 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 TERMS AND FACTORS FOR EXPRESSIONS Given an expression its terms are separated by plus or minus symbols and the factors of its terms are separated by multiplications and if there is no separation by plus or minus symbols the expression is a single term. Every factor of any term for an expression may have one or a finite number of terms itself. Given an expression like terms have exactly the same variables as factors raised to exactly the same exponents. We combine like terms by adding/subtracting their coefficients. Simplified for an expression can mean many things. A fraction is simplified if its numerator and denominator contain no common factors. An expression is simplified if it contains no negative exponents and like terms are combined. NOTATIONS AND WRITING MATHEMATICS A single variable expression is assumed to be positive if it has no positive sign, a positive sign, or no negative sign written in front of its first factor as we view its expression or representation. x = +x = (1)(x) A single variable expression is assumed to be negative if it has a negative sign written in front of its first variable as we view its expression or representation. -x No sign of addition, subtraction, multiplication, and/or division can be directly written next to each other unless they are either separated by a free or fixed variable or parenthesis. If there is a negative sign written outside of parenthesis it means multiplication of the number minus one with the rest of the written expression. -x = (-1)(x) Remember that 28 UNIVERSITY MATHEMATICS t(1994) x x x 1 1 S. Zoch 1 x a x a x 1 nx n x 0 c. t( x )2012 . VARIABLES A variable is a letter , symbol , object, event, place, shape, color, pattern , person, name or any combination or grouping of these that represents one (fixed) or many (free) other letter(s) , symbol (s) , object (s), event (s), pattern (s), person (s), number (s) , set (s), category (ies) , group (s), path (s), time (s), taste (s) , odor (s), feeling (s) , idea (s), statement (s), sound (s) , shape (s), color (s), state (s) , unit (s) , movement (s) , observation (s) , place (s), touch (es), sight (s), quantity (ies), TO WHICH IT OR THEY MAY OR MAY NOT BE EQUIVALENT. A variable is a symbolic name for an object or event so that it can be called upon even if it has infinite properties or is difficult to describe. A variable is a symbolic name that represents one object or event or possibly many other objects or events from a set to which the variable may or may not be equal or look the same. As there exists numbers with a large amount of entries or infinite number of non zero decimal positions or entries which therefore can not be drawn, listed, or written in finite time and/or finite area we must use variables, names or symbols to express them. A variable is either free or fixed (constant) . A variable is chosen to be free or fixed (constant) with a let statement from a certain standard observer. 29 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 A free variable is a symbol or group of symbols which can represent many items of the list written above at all times. As an example we say let x be a free real number so that in any place of the symbol x where it might be located we could substitute a number like 43. A fixed (constant) variable is a symbol or group of symbols which only represents one item of the list written above at every time. Any letter from an alphabet or real number is a fixed variable or constant. The symbol 8 is a fixed variable because it only represents the amount of 8 items. Many of the skills of Algebra are accomplished using the properties of the numbers zero and one called algebraic manipulations. An expression is the finite sum, difference, product and/or quotient of a finite number of free and/or fixed variables or any single variable. Expressions represent a real number and always begin without an equal symbol when given. Each real number can express itself in an infinite number of ways with the binary operations of adding, subtracting, multiplying, and/or dividing. TERMS AND FACTORS FOR EXPRESSIONS Given an expression its terms are separated by plus or minus symbols and the factors of its terms are separated by multiplications and if there is no separation by plus or minus symbols the expression is a single term. Every factor of any term for an expression may have one or a finite number of terms itself. Given an expression like terms have exactly the same free variables as factors raised to exactly the same exponents. We combine like terms by adding/subtracting their coefficients. Simplified for an expression can mean many things. A fraction is simplified if its numerator and denominator contain no common factors. 30 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 An expression is simplified if it contains no negative exponents and like terms are combined. Coefficients, bases, and powers Polynomials An expression, equation or inequality is called polynomial if and only if the exponent of any free variable is a whole number, no base contains an exponent with a free variable, and it is not transcendental otherwise it is non polynomial. An expression which is a polynomial and a single term is called a monomial. Given a monomial its degree is the exponent or power of any free variable or the sum of the exponents for all free variables if there are more than one. Given a polynomial with more than one term its degree is the largest degree of any of its terms. 11a. Factoring polynomials and solving non linear equations Given an expression it is factored if and only if it is written as a product, with at least two factors, and as a single term otherwise it is unfactored. If an expression is not factored we call it unfactored. Any expression is either factored or unfactored when it is given and never exists in a mixed state. Any amount may be factored out of an expression with more than one term but usually we factor out the greatest common factor. GCF Given an expression with more than one term its greatest common factor is the amount which is the largest or has the most prime factors so that it can divide each term of the given expression evenly. 31 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 Theory To factor an expression we use parenthesis and write the amount we want to multiply or factor (take) out next to the expression that is a multiple of the original given expression using parenthesis. ALGEBRAIC FORMS OR FORMATS OF EXPRESSIONS Much useful information can be derived from the algebraic forms of equations and expressions. Understanding and skill with application over the forms or formats of equations and expressions allows us to manipulate abstractions in our modern lives and business to our benefit such as finance, legality, and productivity with technology and resources. Given any expression we can ask about its given or written form is it factored or unfactored at some time. Given any expression we can ask how many terms does it have the way it is being written or expressed. Given an expression with a single term or any term of all other expressions we can ask how many factors are written at a time and what are the factors of terms? Steps to Factor 1. Factor out a GCF if other than the number one. 2. Trinomial use ac method with grouping if necessary. 3. Difference of perfect squares use formula. 4. Sum or difference of perfect cubes us formula. 5. Four or more terms always factor by grouping. DIFFERENCE OF TWO PERFECT SQUARES x y 2 2 x y x y The left hand side of the equation above is unfactored and the right side is the factored format. 32 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 DIFFERENCE OR SUM OF TWO PERFECT CUBES x y 3 x y x xy y 3 x y x xy y 3 3 x y 2 2 2 2 The left hand side of the equations above are unfactored and the right side is the factored format. Simplify means: 1. Perform the indicated operations. 2. Evaluate. 3. Calculate. 4. Add, subtract, multiply or divide. 5. Combine like terms. 6. Distribute across parenthesis. 7. No answer should have negative exponents. 8. Any numeric base should be evaluated. 9. No radical of even index may have a negative radicand. 10. No fraction can have a radical or i in its denominator. 11. Any answer that is a fraction must always be reduced or cancelled. 12. 12a. Linear equations a LINEAR EQUATIONS An equation of the form ax b 0 where a is not zero, a and b are fixed and x is free is called linear in one free variable . 33 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 Any algebraic equation, expression, or inequality is linear (with respect to a free variable) if and only if (it is the real number zero or the zero equation) any exponent a free variable is zero or one, no base with nonzero coefficient contains a free variable with a non zero coefficient in its exponent expression and it is not transcendental otherwise it is called non linear. Theory STEPS FOR SOLVING LINEAR EQUATIONS 1. Clear fractions in an equation by multiplying both sides by the least common denominator. or 2. Clear parenthesis by distributing. 3. Combine like terms on each side separately . 4. Decide if the equation is linear or non linear. 5. If it is linear make a choice to collect all terms with the factor of x on one side and all other terms without the factor of x on the other side and accomplish this using the properties of equality. 6. Make sure the coefficient of the variable is the number one. Make sure the only factor and exponent of x is one so that it says x = ‘a number’. 13a. Linear equations and graphing DOMAINS OF EQUATIONS AND EXPRESSIONS Given an equation or expression with at most two free variables x and y having nonzero coefficients define its domain as the collection of all values which may be substituted for x so that evaluation makes a statement which is defined. 34 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 Defined means no division by zero and no negatives under even indexed radicals. The domain is usually all real numbers unless there is a variable in the denominator of a fraction and/or a variable under a radical. If there is a variable in the denominator of a fraction set this expression of the denominator equal to zero and solve it. These solutions are not in the domain so that the domain in this case is all reals except these solutions. If there is a variable under a radical set the expression under the radical greater than or equal to zero and solve such inequality. These solutions are in the domain so that the domain is the set of only these solutions. RANGE Given an equation with at most two free variables x and y having non zero coefficients its range is defined as the collection or set of all numbers y which are calculated through evaluation with the order of operations agreement as values of x are substituted from the domain. Given any collection of points in a plane its domain is the collection of all x values of their coordinates and the range is the collection of all y values of their coordinates. Two distinct points are all that is required to create a line. An equation of the form Ax + By = C where A, B, and C are fixed and A and B are not both zero with x and y are free is called linear with respect to x and y. Given an equation of the form Ax + By = C we define its solution set as the collection of all (s,t) or points is a plane so that A(s) +B(t) =C is a true statement. SLOPE VALUES OF NON VERTICAL LINES Every line has a slope value associated with it which is a number that is either positive, negative, zero, or undefined. The slope value of a line tells us about the geometry of its graph like how much the line is slanted and in what direction it is slanted, no slant (flat), or a vertical line. 35 UNIVERSITY MATHEMATICS t(1994) Given two distinct points in a plane S. Zoch x , y 1 1 and x , y 2 2 c. t( x )2012 we define the slope value of the line that passes through them denoted and equal to the following : m y y x x 2 1 2 1 . Theory There is a huge relationship through the definition of solution sets for equations between algebra and geometry. DOMAINS OF EQUATIONS AND EXPRESSIONS Given an equation or expression with only the free variable x we define its domain as the collection of all values which may be substituted for x so that evaluation makes a statement which is defined. Defined means no division by zero and no negatives under even indexed radicals. The domain is usually all real numbers unless there is a variable in the denominator of a fraction and/or a variable under a radical. If there is a variable in the denominator of a fraction set this expression of the denominator equal to zero and solve it. These solutions are not in the domain so that the domain in this case is all reals except these solutions. If there is a variable under a radical set the expression under the radical greater than or equal to zero and solve such inequality. These solutions are in the domain so that the domain is the set of only these solutions. Given any collection of points in a plane its domain is the collection of all x values of their coordinates and the range is the collection of all y values of their coordinates. THE REAL PLANE The real plane is defined as a set of ordered pairs representing its points as coordinates denoted and equal to the following 36 UNIVERSITY MATHEMATICS t(1994) R R R R R 2 x , y : S. Zoch c. t( x )2012 x, y R . 2 is called the Euclidean two space or the real plane. 2 is the Cartesian product of two sets of real numbers. The scheme to construct the ordering of a plane was first conceived by Rene DesCartes. A plane when it is considered is a purely mathematical object so that it requires our imagination and symbols to conceive the totality of the concept. Given an ordered pair ( x , y ) we may plot it or graph it by starting at the origin of a plane and going x units right if x is positive or x units left if x is negative then from that place y units up if y is positive or y units down if y is negative and then making a mark or dot. PLANAR RELATIONS OR GRAPHS OF EQUATIONS Horizontal lines are flat straight across and vertical lines go straight up and down. FINDING EQUATIONS OF LINES Coordinates of a point in a plane and a slope value are required to produce an equation of a line. y = mx+b STEPS FOR GRAPHING LINES IN A PLANE 1. Plot points using a chart with x then y or usually an alphabetical order. 2. Find the x intercept by substituting y = 0 into the given equation if any exist. 3. Find the y intercept by substituting x = 0 into the given equation if any exist. 4. Choose a value for x or for y (not both at once) and substitute it into the given equation and solve for the other value and list these as a point x value then y value. 5. Create and label x and y axis and scale units appropriately . 6. Plot these points and draw a line between them using arrows at the ends. FUNCTIONS 37 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 An equation which uses at most two free variables called x and y is a function if and only if for any substitution of a value of x into the equation evaluation will yield only one value for y. Given any two dimensional graph or collection of points in a plane it is a function if there does not exist a vertical line which intersects it or them in more than one place. Any singleton point in a plane is a function. Any non vertical line is a function. Any circle of positive radius in not a function. Given an equation with at most x and y are free then if y is a function of x and we say f (x) = y where f is identified as the name of the equation . f (x) is called function notation and produces names and ordered pairs for complicated equations. GRAPHING EQUATIONS IN THE PLANE 1. Plot points using a chart with x then y or usually an alphabetical order. 2. Find the x intercepts by substituting y = 0 into the given equation if any exist. 3. Find the y intercepts by substituting x = 0 into the given equation if any exist. 4. Find the vertical asymptotes from the domain of the given equation. 5. Find the horizontal asymptotes . 6. Create and label x and y axis and scale units appropriately . 7. Sketch the graph using intercepts and asymptotes. 14a. Exponents and radicals EXPONENTS There are many ways to work with exponents. The hardest part of mathematics is making all the choices yet your answer in the end should be equivalent to any one else’s. 38 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 Let x and y be free. x x 1 0 undefined 0 x 1 when x x x m n 0 m n x 0 . xm n xmn x y x n m n y x m n 1 x n n x y y x n RADICALS OR RATIONAL EXPONENTS x n If y m n x x m n then n y x . EXPONENTIAL FUNCTIONS An equation with at most two free variables say x and y having nonzero coefficients is called exponential if and only if x is an exponent and y is not. 39 UNIVERSITY MATHEMATICS t(1994) y b S. Zoch c. t( x )2012 x 15a. Rational expressions and equations A rational expression is a technical name for a fraction so that all fraction properties apply to rational expressions. Any real number can be written as a rational expression as it is a polynomial and because it is equal to itself divided by one and one is a polynomial. THEOREM OF ALGEBRA Given any two non equal rational numbers a and b then a/b= q+r/b where q is real called the quotient and r is real called the remainder. Example 5/3= 1 + 2/3 If the remainder is zero or r = 0 then we say the division is even and b and q are factors of a as a / b = q . We have 12/4=3 because 12/4=3+0/4 as q=0 . If a/b=c then a=bc and we say b and c are factors of a. 40 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 RATIONAL FUNCTIONS A function y = f(x) is called rational if f(x) is or can be written as one polynomial divided by another non zero polynomial. PARABOLAS LOGARITHMIC FUNCTIONS Let x and y be free and b is a non zero real number. An equation with at most only the two free variables say x and y is called logarithmic if and only if y is an exponent and x is not. x b y Logarithmic notation is a way to express such equations. If log x y b then b y x . EXPONENTIAL FUNCTIONS An equation with at most only the two free variables say x and y is called exponential if and only if x is an exponent and y is not. y b x Long division of polynomials 16a. Set Theory 41 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 REAL NUMBERS Real numbers are those amounts which we deal with on a daily basis either in accounting, travel, medicine, engineering, and/or architecture . SUBSETS OF REAL NUMBERS The set of natural numbers is the collection of elements 1,2,3,4,5,… The set of whole numbers is the collection of elements 0,1,2,3,4,… The set of integers is the collection of elements …,-4,-3,-2,-1,0,1,2,3,4,… The set of rational numbers is the collection of all elements of the form a/b so that a and b are integers and b is not zero. The set of irrational numbers is the collection of all elements of the form whose decimal expansions do not terminate and do not repeat. SET OF REAL NUMBERS The set of real numbers is the union of the set of rational numbers with the set of irrational numbers. Let R represent the set of real numbers. There are an uncountably infinite number of real numbers. The natural numbers are countably infinite because it would take a person or machine an infinite amount of time to list them. The real numbers are uncountably infinite because it would not be possible for a person(s) or machine(s) to list them in any time and it would not be possible for an infinite number of persons and/or machines to list them in any time. Given any real number it is either rational or irrational. Every natural number is also a whole number. N W Every whole number is also an Integer. 42 UNIVERSITY MATHEMATICS t(1994) W S. Zoch c. t( x )2012 Z Every integer number is also a rational number. Z Q Every whole number is not also a natural number. Every integer number is not also a whole number. Every rational number is not also an integer number. No real number is both rational and irrational. Let the finite cardinality of a set be denoted by n. Let the countable infinite cardinality of a set be denoted by . Let the uncountable infinite cardinality of a set be denoted by c. The cardinality of the set of natural numbers, whole numbers, and integers is . The cardinality of the set of irrational numbers and real numbers is c. We hold that c and c 2 c . Given any real number we find its opposite by changing its sign. Every real number has an opposite except zero which can be either plus or minus. The real numbers have an ordering on the real line from smallest to greatest from left to right with the inequality relation. Given any real number x we define its absolute value as the distance from itself to zero on the real line denoted x . PROPERTIES OF REAL NUMBERS AND OPERATIONS The real binary operations are the calculations we normally apply to any pair of real numbers such as adding, subtracting, multiplying, and dividing. Commutative Addition Commutes A+B = B+A so that 43 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 A+B+C = C+B+A = A+C+B = C+A+B = B+C+A = B+A+C … Multiplication Commutes AB = BA so that ABC = CBA = ACB = CAB = BCA = BAC … Distributive Distribution over additions A(B+C)= AB+AC 2(3+4)= 2·3+2·4 Distribution over subtractions A(B-C)= AB-AC 2(3-4)= 2·3-2·4 Associative Associativity of Addition (A+B)+C = A+(B+C) (2+3)+4 = 2+(3+4) Associativity of Multiplication (AB)C = A(BC) (2·3)4 = 2(3·4) Multiplicative Identity One is the multiplicative identity because anything multiplied by one is itself. 44 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 (1)(x) = (x)(1) = x (1)(2) = (2)(1) = 2 Additive Identity Zero is the additive identity because anything added to zero is itself. 0+x= x+0=x 0+2= 2+0=2 Multiplicative Inverse Given any real number not equal to zero called x we define its inverse or reciprocal as 1/x. Any nonzero real number multiplied by its reciprocal is one. Additive Inverse or Opposites NOTATIONS AND WRITING MATHEMATICS A single variable expression is assumed to be positive if it has no positive sign, a positive sign, or no negative sign written in front of its first factor as we view its expression or representation. x = +x = (1)(x) A single variable expression is assumed to be negative if it has a negative sign written in front of its first variable as we view its expression or representation. -x No sign of addition, subtraction, multiplication, and/or division can be directly written next to each other unless they are either separated by a free or fixed variable or parenthesis. If there is a negative sign written outside of parenthesis it means multiplication of the number minus one with the rest of the written expression. -x = (-1)(x) Remember that 45 UNIVERSITY MATHEMATICS t(1994) x x x 1 1 S. Zoch 1 x a x a x 1 nx n x 0 c. t( x )2012 . SET THEORETIC OPERATIONS AND RELATIONS Given two sets A and B we say they are equal and write A = B if and only if they are both subsets of each other or A B and B A . Given a set A and another set B we can create a new set called their union which includes all elements of A or B written A B . We write or denote the following: A B x : x A or x B . Given a set A and another set B we can create a new set called their intersection which includes only elements in common to A and B written A B . We write or denote the following: A B x : x A and x B . examples Given a set A and a set B where A is a subset of B then we define the complement of A with respect to B as the set of all elements which are elements of B and not A denoted B/A, A , or A / . DeMORGAN’S LAWS The complement of the union of sets is the intersection of their complements. The complement of the intersection of sets is the union of their complements. 46 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 PRODUCT SPACES OF SETS Let A and B be sets then we can define a new set called their product denoted and equal as x , y : A B x A and y B . Let A, B and C be sets then we can define a new set called their product as x , y , z : A B C Let U,U ,U 1 2 3 ,...,U n x A , y B , z C . be sets then we can define a new set called their product as U U U 1 2 3 ... U n x , x ,..., x : x U 1 2 n i i for all i 1,2,3,...,n . Given a set A we define its power set W(A) as the set of all subsets from A. We assume for any given set A that all equivalent forms of any element x of A are only counted once when we consider, list, or write the elements of A. Example Let 3 , 2 , w ,8 , A then 2 , 3 , w ,8 = 3 , 2 , w ,8 , 2 A = 2 , w 3 , 3 w ,8 , w = 8 , 2 , 3 , w , 8 = COMPLEX NUMBERS 2 , 3 , 2 , w , 3 ,8 = ……. Complex numbers are those amounts which we deal with on a basis either in electronics, computers, graphics, engineering, and physics . Let x be a free complex variable. The set of real number is a subset of the set of complex numbers. 47 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 Every real number is by definition also complex. The set of complex numbers is not a subset of the set of real numbers. Every complex number is not necessarily also real. Let i 1 2 be an imaginary variable so that i . We define the set of complex numbers denoted and equal to the following: C a bi : a,b R and i 1 2 . Categories of equations based on their solution sets An equation is conditional if it has a finite number of solutions. An equation is a contradiction if it has no solutions. It will produce a false statement like 0=2 when you try to solve it and the answer is no solution. An equation is an identity if it has an infinite number of solutions. It will produce a true statement like 0=0 when you try to solve it and the answer is all real numbers. The number of equations is uncountably infinite and some equations cannot be expressed in finite space so we use variables to represent these equations. Given an equation it is called radical if there exists a free variable with an exponent that is non integer. Given an equation it is called rational if there exists a free variable with an exponent that is a negative integer. 18a. Format of Problem Statements or Queries A math problem should have two components consisting of a direction and a given statement. The directions should be satisfied to achieve an answer. The directions are applied to the given statement with analysis. Edit end 48 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 ooooooooooooooooooooooooooooooooooooooooooooo MOST BASIC IDEAS, DEFINITIONS, AND THEOREMS OF MATHEMATICS, SET THEORY, AND LOGIC Set theory is one of the most comprehensive, basic, and most powerful areas of mathematics. Areas of mathematics include uses of Set Theory’s definitions and /or theorems such as Probability, Real Analysis, Complex Analysis, Category Theory, Boolean Algebras, Graph Theory, Abstract Algebra, Non Standard Analysis, Lattice Theory, Ramsey Theory, Dimension Theory, Number Theory, and Topology. Any equations, laws or formulae which are fundamental to physics have many mathematical implications beyond their known or accepted interpretative meanings and these cannot be discarded in reality as their conditional truth is verified by experimental evidence and the laws and axioms of mathematics exist beyond the realms of physical sciences and computers. Nearly all the areas of mathematics listed above also use Algebra and many have their own unique algebraic definitions called relations yet most algebraic principles are common to all. Every area of Mathematics includes many uses of Logic and Sets. All of the areas of Philosophy and Mathematics depend on given premises, relations, and/or axioms. Only the areas of Philosophy known as First Order Predicate Calculus, Universal Algebras, and Logic may not require the use of Set Theory. Philosophy is an ancestor of Mathematics and Logic. 49 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 AXIOMS The axioms of Mathematics are similar to those of Logic and required to create basis. AXIOM OF OPPOSITES Every real number has an opposite except zero and any real number added to its opposite must equal to zero. Zero added or subtracted from any real number a must equal to a. AXIOM OF PARALLEL LINES We assume all distinct lines which are parallel never cross or intersect in any two dimensional Euclidean plane where they exist. AXIOM OF ARCHIMEDES Given any two non equal real numbers there is always another distinct real number between them in value one of which is their average. AXIOM OF CHOICE Given any infinite collection or set we may select an infinite proper subset of singletons. Given any two infinite sets A and B we may select an infinite proper subset of pairs or any singleton element from their product A B x , y : x A and y B . Given any three infinite sets A, B, and C we may select an infinite proper subset of triples or 3 tuples or any singleton element from their product A B C x , y , z : x A , y B , z C . 50 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 Given any finite number of infinite sets U 1, U 2, U 3 ,...,U n we may select an infinite proper subset of n tuples or any singleton element from their product U U U 1 2 3 ... U n x , x ,..., x : x U 1 2 n i i for all i 1,2,3,...,n . Given any countable number of infinite sets we may select an infinite proper subset of countable tuples or any singleton element from their product. Given any uncountable number of infinite sets we may select an infinite proper subset of uncountable tuples or any singleton element from their product. … . . AXIOM OF VARIABLE We may use symbolic names called variables to represent objects or events to which the variable may or may not be equal or the same object or event to any standard observer. AXIOM OF VARIABLE OCCUPATION We assume that if two variables which may or may not occupy the same space and appear to many standard observers to be equivalent can be used in an equivalent way for every expression, task and/or calculation preformed by any standard observers. AXIOM OF VARIABLE TRANSCENDENCE 51 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 The use of one variable to represent an object(s) or event(s) may be replaced with any other variable at any time to produce the same representation. Usually this is done with a let statement. AXIOM OF VARIABLE SUBSTITUTION Given an expression with free variables we may substitute amounts equal to these so that the new expression is always equivalent to the original expression under any evaluation. AXIOM OF LINEAR ORIENTATION AXIOM OF ORIENTATION FOR PLANES Right hand rule. SET THEORY Given a finite number of sets U 1, U 2, U 3 ,...,U n with n is a natural number then define their Cartan Join as the collection C U VU V U V ...V U V U a , a , a ,..., a : a U for all i 1, 2,3,..., n 1 2 n 1 3 n 1 2 3 n i i or n C VU i . i 1 The Cartan Join of sets commutes. Given a set A and if U i A for all i=1,2.3,…,n and n is a natural number so that n A then the Cartan Join 52 UNIVERSITY MATHEMATICS t(1994) C U VU V U V ...V U V U 1 2 3 n 1 is equal to the power set of S. Zoch n A a , a , a ,..., a : a A 1 2 3 n i c. t( x )2012 for all i 1, 2,3,..., n . A set is a collection of objects called elements. As there exists sets with a number of elements which can not be drawn, listed, or written in finite time and/or finite area because they contain some element which is too large to draw or print or they contain a countably infinite or uncountably infinite number of elements we must use variables, names, or symbols to express them. Let A and x be free set theoretic and elemental variables. A represents a set and x represents an element of a set. Given a set A if x is an element of A we write an element of A we write Example Let A x A and if x is not x A . 2 , 3 , w ,8 , so 8 A or 3 A and 3A . Given a set A and a set B where A=B then B=A. A set is either empty, finite, or infinite. is an example of an empty set. 2 , 3 , w ,8 , is an example of a finite set. 53 UNIVERSITY MATHEMATICS t(1994) The set of natural numbers S. Zoch 1 , 2 , 3 ,... c. t( x )2012 is an example of an infinite set. The elements of sets can be listed in any order to have the same set such as 2 , 3 , w ,8 ,= 3 , 2 , w ,8 ,= 2 , 3 ,8 , w ,… The elements of sets can be any type of unusual objects which may or may not be real however usually for us they will be real numbers. Given a set A and another set B if every element of A is also an element of B we say A is a subset of B and write A B . Example Let C e , 3 , w , 6 , 5 and C D D e , h , 3 , 4 w ,11 , 6 , 5 so . Given a set we define its cardinality, number, or order as the number of elements it contains. Given any set A we define its cardinality as the number of elements it contains denoted A . SET THEORETIC OPERATIONS AND RELATIONS 54 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 Given two sets A and B we say they are equal and write A = B if and only if they are both subsets of each other or A B and B A . Given a set A and another set B we can create a new set called their union which includes all elements of A or B written A B . We write or denote the following: A B x : x A or x B . Given a set A and another set B we can create a new set called their intersection which includes only elements in common to A and B written A B . We write or denote the following: A B x : x A and x B . examples Given a set A and a set B where A is a subset of B then we define the complement of A with respect to B as the set of all elements which are elements of B and not A denoted B/A, A , or A / . DeMORGAN’S LAWS The complement of the union of sets is the intersection of their complements. The complement of the intersection of sets is the union of their complements. 55 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 Given a finite number of sets U 1, U 2, U 3 ,...,U n with n is a natural number then define their Cartan Join as the collection C U VU V U V ...V U V U a , a , a ,..., a : a U for all i 1, 2,3,..., n 1 2 n 1 3 n 1 2 3 n i i or n VU i . C i 1 PRODUCT SPACES OF SETS Let A and B be sets then we can define a new set called their product denoted and equal as x , y : A B x A and y B . Let A, B and C be sets then we can define a new set called their product as A B C Let x , y , z : U,U ,U 1 2 3 ,...,U n x A , y B , z C . be sets then we can define a new set called their product as U U U 1 2 3 ... U n x , x ,..., x : x U 1 2 n i i for all i 1,2,3,...,n . Given a set A we define its power set W(A) as the set of all subsets from A. 56 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 We assume for any given set A that all equivalent forms of any element x of A are only counted once when we consider, list, or write the elements of A. Example Let 3 , 2 , w ,8 , A then 2 , 3 , w ,8 = 3 , 2 , w ,8 , 2 A = 2 , w 3 , 3 w ,8 , w = 8 , 2 , 3 , w , 8 = 2 , 3 , 2 , w , 3 ,8 = ……. VENN DIAGRAMS The collection of all sets U is not a set and is called a class. The universe of all sets is denoted U. A Venn Diagram is a two dimensional graph, picture, or subset of a (Euclidean) plane representing some given sets and their conjunction and disjunction properties. Let A be a set then we draw, take, or identify a circle of positive radius in the plane called C A to represent A with its circumference and all elements of A are written, listed or graphed as symbols in the interior of the circle C A . Given distinct elements of the universal set U , call them sets A and B , we draw or take distinct circles in the plane called C A and C B where the boundaries and interiors of the these two circles do not intersect if A intersected with B is empty or A and B are mutually exclusive. 57 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 If A intersected with B is non empty and A is not B then we let the interiors of C A and C B intersect in as a non empty region and write all elements in common to A and B in this region because A and B are mutually inclusive. If A is contained in B then A is a subset of B and the interior and boundary of circle C A is contained in the interior of circle C B . If B is contained in A then the interior and boundary of circle contained in the interior of circle C A . C B is If A = B then C A = C B and all element of A and B are only listed once each in the interior of the circle . The universe of all sets U is a class and contains all categories of VENN DIAGRAMS. Any finite collection of finite sets may be represented by a visible Venn diagram. example REAL NUMBERS Real numbers are those amounts which we deal with on a daily basis either in accounting, travel, medicine, engineering, and/or architecture . SUBSETS OF REAL NUMBERS The set of natural numbers is the collection of elements 1,2,3,4,5,… 58 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 The set of whole numbers is the collection of elements 0,1,2,3,4,… The set of integers is the collection of elements …,-4,-3,-2,-1,0,1,2,3,4,… The set of rational numbers is the collection of all elements of the form a/b so that a and b are integers and b is not zero. The set of irrational numbers is the collection of all elements of the form whose decimal expansions do not terminate and do not repeat. SET OF REAL NUMBERS The set of real numbers is the union of the set of rational numbers with the set of irrational numbers. Let R represent the set of real numbers. There are an uncountably infinite number of real numbers. The natural numbers are countably infinite because it would take a person or machine an infinite amount of time to list them. The real numbers are uncountably infinite because it would not be possible for a person(s) or machine(s) to list them in any time and it would not be possible for an infinite number of persons and/or machines to list them in any time. Given any real number it is either rational or irrational. Every natural number is also a whole number. N W Every whole number is also an Integer. W Z 59 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 Every integer number is also a rational number. Z Q Every whole number is not also a natural number. Every integer number is not also a whole number. Every rational number is not also an integer number. No real number is both rational and irrational. Let the finite cardinality of a set be denoted by n. Let the countable infinite cardinality of a set be denoted by . Let the uncountable infinite cardinality of a set be denoted by c. The cardinality of the set of natural numbers, whole numbers, and integers is . The cardinality of the set of irrational numbers and real numbers is c. We hold that c and c 2 c . Given any real number we find its opposite by changing its sign. Every real number has an opposite except zero which can be either plus or minus. The real numbers have an ordering on the real line from smallest to greatest from left to right with the inequality relation. Given any real number x we define its absolute value as the distance from itself to zero on the real line denoted x . PROPERTIES OF REAL NUMBERS AND OPERATIONS 60 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 The real binary operations are the calculations we normally apply to any pair of real numbers such as adding, subtracting, multiplying, and dividing. Commutative Addition Commutes A+B = B+A so that A+B+C = C+B+A = A+C+B = C+A+B = B+C+A = B+A+C … Multiplication Commutes AB = BA so that ABC = CBA = ACB = CAB = BCA = BAC … Distributive Distribution over additions A(B+C)= AB+AC 2(3+4)= 2·3+2·4 Distribution over subtractions A(B-C)= AB-AC 2(3-4)= 2·3-2·4 61 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 Associative Associativity of Addition (A+B)+C = A+(B+C) (2+3)+4 = 2+(3+4) Associativity of Multiplication (AB)C = A(BC) (2·3)4 = 2(3·4) Multiplicative Identity One is the multiplicative identity because anything multiplied by one is itself. (1)(x) = (x)(1) = x (1)(2) = (2)(1) = 2 Additive Identity Zero is the additive identity because anything added to zero is itself. 0+x= x+0=x 0+2= 2+0=2 Multiplicative Inverse 62 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 Given any real number not equal to zero called x we define its inverse or reciprocal as 1/x. Any nonzero real number multiplied by its reciprocal is one. Additive Inverse or Opposites NOTATIONS AND WRITING MATHEMATICS A single variable expression is assumed to be positive if it has no positive sign, a positive sign, or no negative sign written in front of its first factor as we view its expression or representation. x = +x = (1)(x) A single variable expression is assumed to be negative if it has a negative sign written in front of its first variable as we view its expression or representation. -x No sign of addition, subtraction, multiplication, and/or division can be directly written next to each other unless they are either separated by a free or fixed variable or parenthesis. If there is a negative sign written outside of parenthesis it means multiplication of the number minus one with the rest of the written expression. -x = (-1)(x) Remember that 63 UNIVERSITY MATHEMATICS t(1994) x x x 1 1 S. Zoch 1 x a x a x 1 nx n x 0 c. t( x )2012 . DECIMALS OR BASE TEN REPRESENTATIONS Let n and m be whole numbers. Select a base ten decimal number according to the following expansion: a 10n a 10n1 ... a 102 a 101 a 100 . a 101 b 102 n n 1 2 1 0 1 2 ... b m m 10 Any decimal number can be converted into a real number and any real number can be converted into a decimal number. You should know the names and meanings of the base ten decimal positions especially the ones to the right of the decimal. Always question what is the given statement or given data of a mathematics problem. Remember there is a big difference between an expression and an equation. A solution is always an equation. A simplification of an expression can be another expression or written as an identity equation. ROUNDING AND PLACE VALUES BINARY NUMBERS OR NON BASE TEN REPRESENTATIONS 64 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 Let n and m be whole numbers. Select a binary number or base two number according to the following expansion: an 2n an 12n1 ... a2 22 a121 a0 20 . b121 b2 22 ... bm 2m Computers and machines use base two, eight, or sixteen expansions as these are powers of two so that the dichotomous nature of electronic components can be represented as on or off or one or zero. LOGIC AND BOOLEAN ALGEBRA Logic is a pure science and tries to replicate the unavoidable directions of existence and events using categories. Let p and q be free logical statements or variables. Any logical statement p is called definite if p may be only true or false and is a assigned a value of zero if it is false and a value of one if it is true called its truth value. A false statement is called a contradiction. A true statement is called a tautology. Given a definite logical statement we define its negation as the statement with the opposite of the given statements truth value. LOGICAL QUANTIFIERS Conjunction or Union or Join 65 UNIVERSITY MATHEMATICS t(1994) p or q written S. Zoch c. t( x )2012 pV q Disjunction or Intersection or Meet p and q written pq Values of logical statements involving quantifiers can be listed in diagrams called truth tables. If the statement q is implied by the existence of the statement p we can say p implies q or if p then q written p q . If the statement p exists as result of the existence of the statement q we can say p is implied by q or p only if q written p q . LOGICAL EQUIVALENCE If p implies q and q implies p then we say p if and only if q and write p q and consider that p is the same as q or that they are logically equivalent . Logic and mathematics are inherently connected with philosophy. Most statements of mathematics include a given statement, directions to apply to the given statement and the result(s). It is important to recognize the context and format of a given statement so that directions can be applied to produce accurate results. De Morgan’s Laws for Logical Statements 66 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 FRACTIONS Any answer which if a fraction must always be reduced. A fraction is reduced to lowest terms or reduced if the numerator and denominator have no common factors. If you are working with fractions make everything look like a fraction. In equations we can clear out the fractions and with expressions we may not be able to clear them out. Given a fraction of the form a b where b is not zero a is called the numerator and b is called the denominator. We never divide by zero and if it is the case we say the expression is undefined. Given a fraction of the form a b it means take a unit and divide it into b number of equal parts and select from these a number of them. A fraction is called proper if the numerator is less than the denominator. A fraction is called improper if the numerator is greater than the denominator. A fraction can be reduced and proper or improper at the same time. If a fraction is improper it may also be reduced. Reduced and proper and improper are not the same definitions. 67 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 Any improper fraction can be written as a mixed number. Cancellation Property Let a, x, and b be free and b is not zero. ax bx xa bx ax a xb b Given a fraction of the form a b and a b . b a Given a fraction of the form a b a b a b where b is not zero it also means a b then . Distribute negative numbers across terms where they are indicated by their position in front of parenthesis . Given a fraction multiplied by a variable it may also be written or calculated as numerator of fraction times variable divided by the denominator of the fraction. PROPERTIES OF FRACTIONS Let a, x, c. d, and b be free and b and d are not zero. a 1 a where a 0 68 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 a a 1 0 0 a where a 0 0 0 1 a 0 undefined 0 0 undefined a c b d a c b d a d b c a c b d ad bc bd a c b d ad bc bd ac bd ad bc The formulas above do not require the least common denominator or LCD to use them. 69 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 In all cases a common denominator can be used which may be the product of denominators given as easily as the least common denominator to accomplish all tasks such as clearing fractions from forms of equations and adding or subtracting fractions in expressions. Least Common Denominator or LCD DIVISION THE REAL LINE Every set has a well order. As the collection of real numbers is an uncountably infinite set it has a well order. The ordering of the real numbers is shown on a real line when we fix an origin as a point on the line identified with the real number zero and all positive numbers on one side of this point developed from a given unit and all negative numbers on the other side of this point denoted by negative multiples of the given unit. INFINITIES LAWS OF SIGNS 70 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 Please know your laws of sign very well as they are relatively easy to learn and always used. MULTIPLICATION AND DIVISION Given an expression to multiply or divide two real numbers if they have the same signs the result is positive and if they have unlike signs the result is negative. ADDITION AND SUBTRACTION Given an expression where no multiplication or division is indicated only to add/subtract two real numbers: If they have the same signs combine them and give the result this similar sign. If they have unlike signs then take their difference and give this result the sign of the given number which is farther from zero on the real line. In this case one can think of owing as negative and having as positive. 2+3=5 71 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 2 - 3 = -1 -2 + 3 = 1 -2 - 3 = -5 VARIABLES A variable is a letter , symbol , object, event, place, shape, color, pattern , person, name or any combination or grouping of these that represents one (fixed) or many (free) other letter(s) , symbol (s) , object (s), event (s), pattern (s), person (s), number (s) , set (s), category (ies) , group (s), path (s), time (s), taste (s) , odor (s), feeling (s) , idea (s), statement (s), sound (s) , shape (s), color (s), state (s) , unit (s) , movement (s) , observation (s) , place (s), touch (es), sight (s), quantity (ies), TO WHICH IT OR THEY MAY OR MAY NOT BE EQUIVALENT. A variable is a symbolic name for an object or event so that it can be called upon even if it has infinite properties or is difficult to describe. A variable is a symbolic name that represents one object or event or possibly many other objects or events from a set to which the variable may or may not be equal or look the same. As there exists numbers with a large amount of entries or infinite number of non zero decimal positions or entries which therefore can 72 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 not be drawn, listed, or written in finite time and/or finite area we must use variables, names or symbols to express them. A variable is either free or fixed (constant) . A variable is chosen to be free or fixed (constant) with a let statement from a certain standard observer. A free variable is a symbol or group of symbols which can represent many items of the list written above at all times. As an example we say let x be a free real number so that in any place of the symbol x where it might be located we could substitute a number like 43. A fixed (constant) variable is a symbol or group of symbols which only represents one item of the list written above at every time. Any letter from an alphabet or real number is a fixed variable or constant. The symbol 8 is a fixed variable because it only represents the amount of 8 items. ALGEBRA Algebra is the predecessor of Abstract Algebra. Abstract Algebra and Combinatorics are the predecessors of Number Theory. Many of the skills of Algebra are accomplished using the properties of the numbers zero and one called algebraic manipulations. An expression is the finite sum, difference, product and/or quotient of a finite number of free and/or fixed variables or any single variable. 73 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 Expressions represent a real number and always begin without an equal symbol when given. Each real number can express itself in an infinite number of ways with the binary operations of adding, subtracting, multiplying, and/or dividing. All the following are expressions of the symbol to represent the amount of 8 real objects: 2+2+2+2 (2)(2)(2) (2)(4) 8-0 9-1 10-2 11-3 12-4 13-5… 8/1 16/2 32/4 64/8 … TERMS AND FACTORS FOR EXPRESSIONS Given an expression its terms are separated by plus or minus symbols and the factors of its terms are separated by multiplications and if there is no separation by plus or minus symbols the expression is a single term. Every factor of any term for an expression may have one or a finite number of terms itself. Given an expression like terms have exactly the same free variables as factors raised to exactly the same exponents. We combine like terms by adding/subtracting their coefficients. 74 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 Simplified for an expression can mean many things. A fraction is simplified if its numerator and denominator contain no common factors. An expression is simplified if it contains no negative exponents and like terms are combined. Coefficients, bases, and powers FACTORED EXPRESSIONS Given an expression it is factored if and only if it is written as a product, with at least two factors, and as a single term. If an expression is not factored we call it unfactored. Any expression is either factored or unfactored when it is given and never exists in a mixed state . Any amount may be factored out of an expression but usually we factor out the greatest common factor. GCF Given an expression with more than one term its greatest common factor is the amount which is the largest or has the most prime factors so that it can divide each term of the given expression evenly. To factor an expression we use parenthesis and write the amount we want to multiply or factor (take) out next to the expression that is a multiple of the original given expression using parenthesis. ORDER OF OPERATIONS Every one uses the order of operations agreement worldwide. 75 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 Given an expression with no free variables evaluate it as follows: Numerators and Denominators of fractions are evaluated separately . 1. View only the amount contained by the inner most parenthesis, brackets, braces, under radicals, or inside absolute values. (Those which are inner most are contained by the most other sets of parenthesis, brackets, braces, radicals, or absolute values.) 2. Evaluate exponents only in these inner most. 3. Multiply or divide as it goes from left to right only in these inner most. 4. Add or subtract as it goes from left to right only in these inner most. 5. Repeat for what parenthesis contains the inner most amount from above until the expression is a single number expressed as a single term and unfactored. If there is nothing which contains the parenthesis or the steps yield a redundancy in the inner most then view the entire statement of the expression. Parenthesis Exponents Multiply or Divide ( as you view from left to right ) Add or Subtract ( as you view from left to right ) P.E.M.D.A.S. Parenthesis, brackets, and braces all mean the same thing which is whatever amount is represented directly outside of and next to them will be eventually be multiplied by what they contain. If there is nothing represented directly outside of and next to them then it is assumed to be the number one. 76 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 PERCENTS Percents and numbers are not the same things. Percents have the percent symbol % and numbers do not. Any real number can be converted to a percent and every percent may be converted to a real number. ALGEBRAIC SUBSTITTION One of the most important skills in algebra is algebraic substitution. Using it allows us to correctly substitute values into formulas and accurately produce results as in economics, finance, and sciences. FORMULA INEQUALITY An inequality is the statement that two expressions may not be equal. Let a, b, and c be fixed real numbers. Let x be a free real variable. Given a real number a and another real number called b where a is not equal to b we say that a is less than b if and only if a is to the left of b on the real line and write a < b . 77 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 2< 3 Given a real number a and another real number called b where a is not equal to b we say that a is greater than b if and only if a is to the right of b on the real line and write a > b . -2 > -3 If the arrow points to the left ( < ) it says less than if it points to the right ( > ) it says greater than. Given two unequal real numbers the arrow points to the one which is leftmost on the real line. If we want to say a real number c is positive we may state c > 0 . If we want to say a real number c is negative we may state c < 0 . If a < b then b > a . Examples 2 < 3 so 3 > 2 . -3 < -2 so -2 > -3 . a < b says a is less than b . a b says a is less than or equal to b a > b says a is greater than b a b says a is greater than or equal to b . . . PROPERTIES OF INEQUALITY If a < b then a + c < b + c . If a < b then a - c < b - c . 78 UNIVERSITY MATHEMATICS t(1994) If a < b then a c < b c and a c > b c S. Zoch c. t( x )2012 if c > 0 if c < 0 . If a < b and c is not zero then a/c < b/ c if c > 0 and a/c > b/ c if c < 0 . INEQUALITIES WITH SETS TO MAKE INTERVALS ON THE REAL LINE Intervals are infinite subsets of the real line. Let a, b, and c be fixed real numbers. Let x be a free real variable free. x < b says x is less than b and we use parenthesis to represent this inequality when graphing or writing intervals. x b says x is less than or equal to b and we use brackets to represent this inequality when graphing or writing intervals. x > b says x is greater than b and we use parenthesis to represent this inequality when graphing or writing intervals. x b says x is greater than or equal to b and we use brackets to represent this inequality when graphing or writing intervals. 79 UNIVERSITY MATHEMATICS t(1994) x < b and x > b x b and x b S. Zoch c. t( x )2012 use parenthesis ( ) for intervals. use brackets [ ] for intervals. We always use parenthesis next to the positive or negative infinity symbols when we state intervals which involve them. Using inequalities we may create sets called intervals as subsets of the real line. Solution Interval Set Graph ooooooooooooooooooooooooooooooooooooooooooooooooooooooo ooo x < a , a x : x a , 3 x : x 3 Example x < 3 ooooooooooooooooooooooooooooooooooooooooooooooooooooooo ooo x a ( , a ] x : x x a Example ( , 5 ] x -5 : x 5 ooooooooooooooooooooooooooooooooooooooooooooooooooooooo ooo x > a a , x : x a 2 , x : x 2 Example x > 2 80 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 ooooooooooooooooooooooooooooooooooooooooooooooooooooooo ooo [ a , ) x a x : x x a Example [ 3 , ) x -3 x 3 : ooooooooooooooooooooooooooooooooooooooooooooooooooooooo ooo a< x < b a , b x a x b : Example -4 < x < 3 4 , 3 x 4 x 3 : ooooooooooooooooooooooooooooooooooooooooooooooooooooooo ooo a< x b (a,b] x : a x b Example -4 < x 3 ( -4 , 3 ] x : 4 x 3 ooooooooooooooooooooooooooooooooooooooooooooooooooooooo ooo x < a or x > b x : x a or x b , a b , Example 81 UNIVERSITY MATHEMATICS t(1994) x < 2 or x > 3 x : x 2 or x 3 , 2 S. Zoch 3 , c. t( x )2012 Examples [-1, 5] [0, 2] = [0, 2] [-1, 5] (0, 2) = (0, 2) [-1, 5] (0, 2] = (0, 2] [-1, 5] [0, 2) = [0, 2) [-1, 5] [0, 2] = [-1, 5] [-1, 5] (0, 2) = (0, 2) [-1, 1] [1, 3] = 1 [-1, 1) (1, 3] = [-1, 4] [2, 6] = [2, 4] (- , 5] [-3, ) = [-3, 5] (- , 4) (4, ) = (- , 4] [4, ) = 4 (- , 4] [4, ) = (- , ) (- , 8) (2, ) = (2, 8) (- , 8) [2, ) = [2, 8) (- , 8] (2, ) = (2, 8] 82 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 ABSOLUTE VALUES AND INEQUALITY OR EQUALITY If x < a then -a < x < a . If x > a then x > a or If x a then either x a x <-a or . x a . NON LINEAR INEQUALITIES 1. 2. 3. 4. 5. 6. 7. 8. 9. Clear parenthesis by distributions. Combine like terms on each side separately . Do not clear fractions. Move all terms to one side and zero on the other side. Factor the non zero side and if it is a fraction factor the numerator and the denominator. Set each factor equal to zero and solve for roots. make a chart using the roots of step 6 to create regions on the real line. choose a test value from one of the regions to substitute into the original statement. if it produces a true statement the region where it was selected from is part of the solutions otherwise adjacent region(s) are solutions. 83 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 EQUALITY Equality is called a relation. An equation is the statement that two expressions are equal. Equations always begin with the equal symbol showing and expressions never begin with the equal symbol showing. It is very important to recognize the difference between equations and expression as their direction statements usually are different. PROPERTIES OF EQUALITY If a = b then a + c = b + c . If a = b then a - c = b - c . If a = b then ac= bc. If a = b and c is not zero then a/c = b/ c . If a = b then b = a . THEOREM OF ALGEBRA 84 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 Given any two non equal rational numbers a and b then a/b= q+r/b where q is real called the quotient and r is real called the remainder. Example 5/3= 1 + 2/3 If the remainder is zero or r = 0 then we say the division is even and b and q are factors of a as a / b = q . We have 12/4=3 because 12/4=3+0/4 as q=0 . If a/b=c then a=bc and we say b and c are factors of a. Given any real number x and any natural number n we say that nx is a multiple of x. Given x = 3 then its multiples are: 3 6 = (1)(3) = (2)(3) 9 12 … = (3)(3) = (4)(3) RATIOS AND PROPORTIONS 85 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 A ratio is an expression of a fraction . The ratio of a to b is denoted a/b or a : b . A proportion is the statement or equation that two fractions or ratios are equivalent. Example a/b =c/d ½ = 3/6 so (1)(6) = (3)(2) If a/b =c/d then ad = bc . PRIME NUMBERS A natural number greater than one is prime if and only if it can be written as a multiplication with the natural numbers one and itself and this is the only way to do it. Not every prime number is odd because two is prime. Not every odd number is prime because nine is odd and not prime. It is exceedingly hard to tell if a random large number is prime. This is an open question of number theory. 19. UNITS, METRICS, AND CONVERSIONS also standards of Mathematics 86 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 Units are arbitrary conventions created by people to quantify properties from observations using scientific studies and measurements such as physics, chemistry, and biology. Use of the british system only promotes the imperialist machinations of European and english conquerors in the Americas specifically in the United States of America. The metric system is a modern and almost worldwide standard used in many countries such as Mexico and most countries overseas. Every student should learn the metric system and know how to convert between many different units and systems. UNIVERSAL CONSTANTS The amounts of pi and e are universal constants. DEGREES AND RADIANS DOMAINS OF EQUATIONS AND EXPRESSIONS Given an equation or expression with only the free variable x we define its domain as the collection of all values which may be substituted for x so that evaluation makes a statement which is defined. Defined means no division by zero and no negatives under even indexed radicals. The domain is usually all real numbers unless there is a variable in the denominator of a fraction and/or a variable under a radical. If there is a variable in the denominator of a fraction set this expression of the denominator equal to zero and solve it. 87 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 These solutions are not in the domain so that the domain in this case is all reals except these solutions. If there is a variable under a radical set the expression under the radical greater than or equal to zero and solve such inequality. These solutions are in the domain so that the domain is the set of only these solutions. RANGE Given an equation with at most two free variables call them x and y its range is defined as the collection or set of all numbers y which are calculated through evaluation with the order of operations agreement as values of x are substituted from the domain. Given any collection of points in a plane its domain is the collection of all x values of their coordinates and the range is the collection of all y values of their coordinates. ALGEBRAIC FORMS OR FORMATS OF EXPRESSIONS Much useful information can be derived from the algebraic forms of equations and expressions. Understanding and skill with application over the forms or formats of equations and expressions allows us to manipulate abstractions in our modern lives and business to our benefit such as finance, legality, and productivity with technology and resources. Given any expression we can ask about its given or written form is it factored or unfactored at some time. 88 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 Given any expression we can ask is it written as a proper fraction or is it written as a whole number. Given any expression we can ask how many terms does it have the way it is being written or expressed. Given an expression with a single term or any term of all other expressions we can ask how many factors are written at a time and what are the factors of terms? EXPONENTS There are many ways to work with exponents. The hardest part of mathematics is making all the choices yet your answer in the end should be equivalent to any one else’s. Let x and y be free. x x 1 0 undefined 0 x 1 0 when x x x m n x 0 . m n xm n xmn x y x n m n y x m n 1 x n 89 UNIVERSITY MATHEMATICS t(1994) n x y y x S. Zoch c. t( x )2012 n RADICALS OR RATIONAL EXPONENTS x n m x m n SCIENTIFIC AND OTHER NOTATIONS A number is written in scientific notation if it is written as a product of a number between one and ten and an integer power of ten. COMPLEX NUMBERS Complex numbers are those amounts which we deal with on a basis either in electronics, computers, graphics, engineering, and physics . Let x be a free complex variable. The set of real number is a subset of the set of complex numbers. Every real number is by definition also complex. The set of complex numbers is not a subset of the set of real numbers. Every complex number is not necessarily also real. Let i be an imaginary variable so that i 1 2 . 90 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 We define the set of complex numbers denoted and equal to the following: C a bi : a,b R and i 1 2 . PHYSICS Physics is the most direct application of mathematics to our physical observable universe. Physics uses mathematics to understand relations between observable and measurable phenomena. VECTORS A vector has direction and magnitude (force). Vectors are represented by rays of finite length. The direction of the vector represents the origination and position of an applied force and its magnitude or length represents the strength of the force in a given unit (usually Newton’s). ai+bj 91 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 THOUGHT EXPERIMENTS A thought experiment is an event conceived in one’s mind to derive a possible outcome which may not necessarily be done in practice and which may be impossible in practice. GEOMETRY Geometry is one of the oldest areas of mathematics also Astronomy is ancient and vastly created by the Egyptians, Aztecs, Native Americans, Greeks, and Chinese. Modern day geometry is called Topology. Geometry is a very pure and elegant study. Units of measurement for one dimensional objects are called lengths. Length is measured using a given linear unit such as meters. Units of measurement for two dimensional objects are called areas. Area is measured using a given two dimensional square unit such as square meters. Units of measurement for three dimensional objects are called volumes. Volume is measured using a given three dimensional cubic unit such as meters cubed . Rays, arcs, points, lines, and segments A point is a zero dimensional object. Two rays intersecting only at their endpoints with an angle of 180 degrees between them is equivalent to a line. 92 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 Rays mimic light expanding from a source. Because of Einstein’s theory of General Relativity and the fact that black holes exist we know that lines and planes are purely mathematical objects as gravity can bend the rays of light and warp the fabric of spaces. TRIANGLES The sum of interior angles of any triangle must equal 180 degrees. CIRCLES RECTANGLES Every square is a rectangle yet not all rectangles are squares. TRIGONOMETRY Trigonometry is very useful for navigations, satellite orbits, and space travel. The properties of triangles are so numerous and useful that we call their study and application trigonometry. TRIGONOMETRIC FUNCTIONS 93 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 Given the diagram above we define the trigonometric ratios as written: We have Y is the hypotenuse. sin B opposite hypotenuse cos G adjacent hypotenuse tan sin sec Y Y cos 1 cot 1 Y cos G B G opposite adjacent hypotenuse adjacent 94 UNIVERSITY MATHEMATICS t(1994) csc cot cos 1 Y sin B sin S. Zoch c. t( x )2012 hypotenuse opposite 1 tan G B adjacent opposite Let x represent degrees and y is real then : y = sin(x) y = cos(x) y = tan(x) y = sec(x) y = csc(x) y = cot(x) Polynomials An expression is called polynomial if and only if the exponents of any free variables are whole numbers or the exponents are not fractions and/or negative numbers. 95 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 An expression which is a polynomial and a single term is called a monomial. Given a monomial its degree is the exponent or power of any free variable or the sum of the exponents for all free variables if there are more than one. Given a polynomial with more than one term its degree is the largest degree of any of its terms. FACTORING Polynomials DIFFERENCE OF TWO PERFECT SQUARES 2 x y 2 x y x y The left hand side of the equation above is unfactored and the right side is the factored format. DIFFERENCE OR SUM OF TWO PERFECT CUBES x y 3 3 x y x xy y 2 2 96 UNIVERSITY MATHEMATICS t(1994) x y 3 3 x S. Zoch c. t( x )2012 y x xy y 2 2 The left hand side of the equations above are unfactored and the right side is the factored format. TRINOMIALS FACTORING BY GROUPING EQUATIONS AND EQUALITY An equation is the statement that two expressions are equal. Each equation has a left hand side and a right hand side. All equations may be expressed using variables. The number of equations is uncountably infinite. Let a and b be free algebraic expressions then we have any equation can be represented as the symbolic statement a=b . The solution set for an equation is a real number or a collection of real numbers which can be substituted for the free variable(s) so that evaluation of each side of the equation through the order of operations yields a true statement or tautology. A math problem should have the two components of the direction and the given statement. 97 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 The direction of an equation is usually to solve and the direction of an expression is usually to simplify. Simplify has many meanings. Simplify means: 13.Perform the indicated operations. 14.Evaluate. 15.Calculate. 16.Add, subtract, multiply or divide. 17.Combine like terms. 18.Distribute across parenthesis. 19.No answer should have negative exponents. 20.Any numeric base should be evaluated. 21.No radical of even index may have a negative radicand. 22. No fraction can have a radical or i in its denominator. 23. Any answer that is a fraction must always be reduced or cancelled. 24. Categories of equations based on their solution sets An equation is conditional if it has a finite number of solutions. An equation is a contradiction if it has no solutions. It will produce a false statement like 0=2 when you try to solve it and the answer is no solution. An equation is an identity if it has an infinite number of solutions. It will produce a true statement like 0=0 when you try to solve it and the answer is all real numbers. 98 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 The number of equations is uncountably infinite and some equations cannot be expressed in finite space so we use variables to represent these equations. Given an equation it is called radical if there exists a free variable with an exponent that is non integer. Given an equation it is called rational if there exists a free variable with an exponent that is a negative integer. LINEAR EQUATIONS An equation of the form ax b 0 where a is not zero, a and b are fixed and x is free is called linear in one free variable . An equation, expression, or inequality is linear with respect to a free variable if and only if any exponent of a free variable is zero or one and no exponent contains a free variable in its expression and the equation is not transcendental otherwise it is called non linear. STEPS FOR SOLVING LINEAR EQUATIONS 1. Clear fractions in an equation by multiplying both sides by the least common denominator. or 2. Clear parenthesis by distributing. 3. Combine like terms on each side separately . 4. Decide if the equation is linear or non linear. 5. If it is linear make a choice to collect all terms with the factor of x on one side and all other terms without the factor of x on the other side and accomplish this using the properties of equality. 6. Make sure the only factor and exponent of x is one so that it says x = ‘a number’. 99 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 NON LINEAR EQUATIONS Quadratic Equations ax bx c 0 2 An equation of the form where a is not zero is called non linear or quadratic. Every quadratic equation is non linear. Every non linear equation is not necessarily quadratic. Quadratic equation implies it is non linear. Non linear equation does not imply it is quadratic. QUADRATIC FORMULA Given an equation of the form ax bx c 0 2 the solutions are given by b b 4ac x 2a 2 . PRINCIPLE OF ZERO PRODUCTS If the product of a finite number of factors is zero then any one of the factors could be zero. If ab=0 then either a=0 or b=0 . 100 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 STEPS FOR SOLVING NON LINEAR EQUATIONS 1. Clear fractions in an equation by multiplying both sides by the least common denominator. or 2. Clear parenthesis by distributing. 3. Combine like terms on each side separately . 4. Decide if the equation is linear or non linear. 5. If it is non linear make a choice to collect all terms on one side and zero on the other side and accomplish this. 6. Factor the non zero side. 7. Set each factor to zero and solve these as linear equations. 8. If the non zero side will not factor and if the equation is quadratic then use the quadratic formula. STEPS TO SOLVE WORD PROBLEMS 14. Read the problem all the way through without stopping for totality before you begin to try to solve it. 15. Make a basic comprehension of the problem in real world terms so that you can reason a solution. 16. Draw any related pictures, diagrams, or figures if possible. Start to sketch out the problem. 17. List the given relevant or essential data on your paper with units and determine what information may not be relevant. 18. List any implied or given formulas and or equations on your paper. 19. Make sure all units are uniform. 20. Make a let statement to define the unknown or requested amount(s) as a variable and derive other 101 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 unknown amount as expressions using this variable where required. 21. Create an equation which is equivalent to the word problem in Mathematics from our case in English. 22. Make sure the equation is of only one variable type so it can be solved. This may require substitutions. 23. Solve it. 24. Consider that all requested amounts are exhibited by re- reading the problem and that you have shown all required answers. Otherwise you may have to calculate more results. This may require you to re read the problem statement again. 25. Include units for answers where they are required. 26. Check your answer(s) and make sure it (they) appear to make sense to you. 14. Organize or arrange your results in a presentable manner. Word problems can be stated in an unclear or ambiguous way so if this is the case try one interpretation and if it does not produce good results try another interpretation to produce logical and complete results. Never give up. THE REAL PLANE The real plane is defined as a set of ordered pairs representing its points as coordinates denoted and equal to the following R R R R R 2 2 2 x , y : x, y R . is called the Euclidean two space or the real plane. is the Cartesian product of two sets of real numbers. 102 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 The scheme to construct the ordering of a plane was first conceived by Rene DesCartes. A plane when it is considered is a purely mathematical object so that it requires our imagination and symbols to conceive the totality of the concept. Given an ordered pair ( x , y ) we may plot it or graph it by starting at the origin of a plane and going x units right if x is positive or x units left if x is negative then from that place y units up if y is positive or y units down if y is negative and then making a mark or dot. PLANAR RELATIONS OR GRAPHS OF EQUATIONS There is a huge relationship through the definition of solution sets for equations between algebra and geometry. Given an equation which uses at most two free variables called x and y we define its graph or solution set as the collection of all ordered pairs or points in the plane ( s , t ) so that substitution of s for x and t for y is evaluated to produce a true statement. The solution set of an equation is also its graph. CIRCLES LINES Two distinct points are all that is required to create a line. An equation of the form Ax + By = C where A, B, and C are fixed and A and B are not both zero with x and y are free is called linear with respect to x and y. 103 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 Given an equation of the form Ax + By = C we define its solution set as the collection of all (s,t) or points is a plane so that A(s) +B(t) =C is a true statement. Horizontal lines are flat straight across and vertical lines go straight up and down. SLOPE VALUES OF NON VERTICAL LINES Every line has a slope value associated with it which is a number that is either positive, negative, zero, or undefined. The slope value of a line tells us about the geometry of its graph like how much the line is slanted and in what direction it is slanted, no slant (flat), or a vertical line. Given two distinct points in a plane x , y 1 1 and x , y 2 2 we define the slope value of the line that passes through them denoted and equal to the following : m y y x x 2 1 2 1 . FINDING EQUATIONS OF LINES Coordinates of a point in a plane and a slope value are required to produce an equation of a line. y = mx+b 104 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 LINEAR APPLICATIONS Linear regression and Least Squares Fit of data Given at least two distinct points or a finite collection of distinct points in a plane we define their Least Squares Fit to be the equation of the line which is a minimum distance from each point. To find the Least Squares fit of a finite collection of points we usually input their coordinates into a calculator or computer program. Given two distinct points in a plane their least squares fit is the line that passes through them. STEPS FOR GRAPHING LINES IN A PLANE 7. Plot points using a chart with x then y or usually an alphabetical order. 8. Find the x intercept by substituting y = 0 into the given equation if any exist. 9. Find the y intercept by substituting x = 0 into the given equation if any exist. 10. Choose a value for x or for y (not both at once) and substitute it into the given equation and solve for the other value and list these as a point x value then y value. 11. Create and label x and y axis and scale units appropriately . 12. Plot these points and draw a line between them using arrows at the ends. FUNCTIONS 105 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 An equation which uses at most two free variables called x and y is a function if and only if for any substitution of a value of x into the equation evaluation will yield only one value for y. Given any two dimensional graph or collection of points in a plane it is a function if there does not exist a vertical line which intersects it or them in more than one place. Any singleton point in a plane is a function. Any non vertical line is a function. Any circle of positive radius in not a function. Given an equation with at most x and y are free then if y is a function of x and we say f (x) = y where f is identified as the name of the equation . f (x) is called function notation and produces names and ordered pairs for complicated equations. OPERATIONS ON FUNCTIONS AND THEIR COMPOSITIONS Given functions f(x) and g(x) we may define new functions called their sum, difference, product, and quotient. (f+g)(x)= f(x) + g(x) (f-g)(x)= f(x) - g(x) (fg)(x)= f(x)g(x) (f/g)(x)= f(x)/g(x) where g(x) is not zero. 106 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 Given functions f(x) and g(x) we may define new function called their composition written and equal to : f g x f g x If f g x x then we say f and . and g g f x x are inverses of each other and write g f 1 . VERTICAL AND HORIZONTAL SHIFTS AND TRANSLATIONS OF FUNCTIONS Given a function y = f(x) and a real number c we have the following: 1. y = -f(x) is a reflection of f(x) about the x axis. 2. y = f(-x) is a reflection of f(x) about the y axis. 3. y = f(x) + c is a shift of f(x) c units up if c is positive and down if c is negative. 4. y = f(x+c) c is negative. is a shift of f(x) c units left if c is positive and right if RATIONAL FUNCTIONS A function y = f(x) is called rational if f(x) is or can be written as one polynomial divided by another non zero polynomial. PARABOLAS 107 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 LOGARITHMIC FUNCTIONS Let x and y be free and b is a non zero real number. An equation with at most only the two free variables say x and y is called logarithmic if and only if y is an exponent and x is not. x b y Logarithmic notation is a way to express such equations. If log x y b then b y x . EXPONENTIAL FUNCTIONS An equation with at most only the two free variables say x and y is called exponential if and only if x is an exponent and y is not. y b x LOGARITHMIC AND EXPONENTIAL APPLICATIONS 108 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 ECONOMICS Economics is the scientific analysis of business, goods, services, capital, and markets using Real Analysis, Game Theory, and Graph Theory. All decimal numbers which represent dollar amounts should always be rounded to the nearest penny or .01 (hundredths) . Be able to use currency exchange rates. The units in economics are usually real and numeric. One economic unit which uses imaginary quantities is electricity. An economic product or output is fractionalizable if it may be divided into parts and will not loose its character (identity), structure, and usefulness. An example of a product which is fractionalizable (or not discrete) is a liter of ice cream because there does exist a product or out put unit marketable as ½ of the liter. An economic product or output is unfractionalizable (or discrete) if it may not be divided into any number of parts because it will loose its character (identity), structure, or usefulness. An example of a product which is unfractionalizable or discrete is a television because there does not exist a product or output unit viable as ½ a television. Almost all economic products are either fractionalizable or unfractionalizable. Economic products can mostly be considered as elements of finite product spaces of raw goods and services. 109 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 Any given unit of every quantity, variable, economic service, or product (output) called a quantitative unit is pure if and only if it is never written or equal to a sum and/or mixture resulting from any procedure of combining proportional amounts of other distinct quantitative units or free variables where each proportion of these quantities is distinguishable from all others for almost every standard observer at all times before the quantitative unit exists. A given unit of every quantity, variable, economic service, or product (output) is not pure called partitive or stochastic if it is always written or equal to a sum and/or mixture resulting from a procedure of combining proportional amounts of at least two quantitative units or free variables where each proportion of these quantities is distinguishable to almost every standard observer at all times. A caterer has the following price structure for banquets. The first 23 meals are charged the basic price per meal. The next 22 meals are discounted by $3 each and all additional meals are each reduced by $4. If the total cost for 80 meals comes to $800, what is the basic price per meal? Suppose the price of Crest toothpaste dropped from $1.50 to $1.00 when the tube size was reduced from 100ml to 70ml . Calculate the percent change in tube volume, tube price, and unit price. 110 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 Given an initial value of $4200 and a final value of $3200 with an income yield of 5% find the income, Capital gain yield, and rate of total return for the investment. Calculate yields and rates of return to the nearest .01%. Given an income of $11000 and an income yield of 8% with a Capital gain yield of 20% find the final and initial values, and the rate of total return for the investment. Calculate yields and rates of return to the nearest .01%. The Oxen Farm has 450 acres of land allotted for raising corn and wheat. The cost to cultivate corn is $44 per acre. The cost to cultivate wheat is $33 per acre. The owners have $16,700 available to cultivate these crops. How many acres of each crop should the owners plant? 111 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 SUPPLY AND DEMAND At a price per unit of $ 55 for a VCR consumers demand 100 VCRs and at a price per unit of $95 consumers demand 50 VCRs in a given market. Find the equation of the line that represents the least squares fit where x is the price per unit and y is the quantity of units demanded by the market and graph it. At a price per unit of $ 45 for a DVD a company wants to sell 30 DVDs and at a price per unit of $100 they want to sell 150 DVDs in a given market. Find the equation of the line that represents the least squares fit where x is the price per unit and y is the quantity of units supplied by the market and graph it. PROFIT Revenue less costs equals profit. P=R–C INTEREST AND COMPOUND INTEREST 112 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 The simple interest I produced by an investment called a principle P into an account with a simple rate or interest called r for an amount of time in years t is given by I Pr t . The monetary amount in account A with simple interest I produced by an initial investment principle quantity P into the account with interest rate r for an amount of time in years t is given by A P Pr t . Find the amount of an investment for a principle of $8800 compounded quarterly after 11.5 years with a rate of interest 5%. Find the amount of an investment for a principle of $8000 compounded monthly after 10.5 years with a rate of interest 5%. Find the amount of an investment for a principle of $3000 compounded continuously at the rate of 3% after four years. Find the amount of an investment for a principle of $4000 with simple interest rate of 5.2% after three months. ANNUITIES AND AMORTIZATIONS An employee savings plan allows any employee to deposit $25 at the end of each month into a savings account earning 6% annual interest compounded monthly. Find the future value of this savings plan if an employee makes the deposits for ten years. ACCOUNTING 113 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 FINANCE STOCKMARKETS AND BANKING GAME THEORY CHEMISTRY BIOLOGY Calculus is directly applied in rates of change for Biology. 114 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 MAXIMA AND MINIMA OF GRAPHS INCREASING AND DECREASING GRAPHS GRAPHING EQUATIONS IN THE PLANE 7. Plot points using a chart with x then y or usually an alphabetical order. 8. Find the x intercepts by substituting y = 0 into the given equation if any exist. 9. Find the y intercepts by substituting x = 0 into the given equation if any exist. 10. Find the vertical asymptotes from the domain of the given equation. 11. Find the horizontal asymptotes . 12. Create and label x and y axis and scale units appropriately . 6. Sketch the graph using intercepts and asymptotes. CALCULUS 115 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 Calculus is the study of real limits, areas, equations, infinity, and relationships between rates of change in events and real numbers. The predecessor of Calculus is called Analysis which can be real, complex, or numeric. LIMITS INTEGRALS CONTINUITY A function y f (x) is continuous at a in the domain of f if and only if : 1. 2. f (a) exists lim f ( x) exists x a 3. lim f ( x) f (a) x a 116 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 REAL THREE SPACE The real three space is defined as a set of all ordered triples representing its points as coordinates denoted and equal to the following R R R R 3 x , y , z : x, y, z R . 3 is called the Euclidean three space or the real three space. 3 is the Cartesian product of three sets of real numbers. R R Three distinct points are all which is required to create a plane. EQUATIONS OF PLANES An equation of the form Ax By Cz D is called linear in three free variables and represents a unique plane in R3 . SYSTEMS OF LINEAR EQUATIONS ax by c dx ey f 117 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 SYSTEMS OF LINEAR INEQUALITIES ax by c dx ey f SYSTEMS OF EQUATIONS SYSTEMS OF NON LINEAR EQUATIONS REAL (EUCLIDEAN) N SPACE The real n space where n is a natural number is defined as a set of all ordered n tuples representing its points as coordinates denoted and equal to the following R R R R ... R R n x , x ,..., x : x R for all i 1,2,3,...,n . 1 2 n i R n is called the Euclidean n space or the real n space. R n is the Cartesian product of n sets of real numbers. SEQUENCES AND SERIES 118 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 A sequence is a list of numbers or elements in order from left to right. a , a , a ,... 1 2 3 Any element of a sequence is a real number represented by ai called the ith term or element of the sequence where i=1,2,3,… A sequence is constant if all the elements are equal. A sequence is finite if the list is finite a1, a2, a3 ,..., an with n is natural. A sequence is called infinite if the list or number of its elements is infinite a , a , a ,... 1 2 3 We can think of a sequence as a function from the natural numbers to the real numbers. Sequence Notations ARITHMETIC SEQUENCES GEOMETRIC SEQUENCES SERIES 119 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 MATRICES Matrices may be applied to any case of linear expressions or equations with a finite number of free variables. Matrices are used in logistical situations, economics, probabilities, and aviation. A matrix is a rectangular array of entries. Let A and M be a free matrix theoretic variable. Let M mxn be the collection of all matrices with m number of columns and n number of rows where m and n are natural numbers. We say A is an m by n matrix written m x n with m is the number of rows and n is the number of columns for the matrix A. A matrix is square if the number of columns equals the number of rows or m=n. 1 0.5 2 1 A 0 7 9 4 1 0 I 4 0 0 3 1 6 8 1 0 0 1 0 0 0 1 0 0 0 1 0 0 0 1 is an example of a 4 x 4 matrix which is square. is called the 4 x 4 identity matrix. 120 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 Matrix Notations and Operations DISCRETE MATHEMATICS NUMBER THEORY Number theory employs prime numbers to create ciphers for encoding and encryption. GRAPH THEORY Economics t(7/10/08) Introduction Financial institutions such as banks should be careful when rounding [f1] monetary units such as the dollar. Rounding can be used either to the benefit or detriment of a banks and/or clients. Rounding is necessary for monetary units and most units that are finite. Rounding of currency units where it is required in formulae applications ( such 121 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 as computation of interest of a given principle) can produce imaginary [i] or fictitious fraction unit parts or increments or deficits for any given individual currency unit such as the dollar unit. Manipulation of interest rates and compounding [f] should be strictly controlled by the federal government to decrease the possibilities of abuse by financial institutions and corporations against the average person and their families. Formulae of finance, economics, or accounting where lending is concerned and in every other instance of their applications to the sets of monetary units are discontinuous [top] over the set of real numbers as no unit of money or currency can have every real increment of all its fraction parts in any mint’s [m] production for all countries or organizations over any time except in imagination or theory [t]. Events in U.S. and world economies is the demonstration of the difference in theoretical accounting and empirical accounting reflected in the differences between theoretical probability and empirical statistics. Probability Introduction Let N be the set of natural numbers. Given a set A let A be its cardinality [s]. 122 UNIVERSITY MATHEMATICS t(1994) Let U,U ,U 1 2 3 S. Zoch c. t( x )2012 be sets and n is a natural number then we ,...,U n can define a new set called their product as n U U U U i 1 i 1 2 3 ... U n x , x ,..., x : x U 1 2 n i i for all i 1, 2,3,..., n . Given an event or experiment e that can be considered as a finite number of steps where at each step there are any number of choices or options define its sample space S as the collection of all outcomes of event e. Given a set A we define its power set W(A) as the set of all subsets from A. Given an event or experiment e where it can be considered as a finite number of steps n with n is a natural number and where at each step there is a set of choices or options. Let Ai be the collection of all options for the ith step of experiment e and define the sample space S of e as n S Ai i 1 x , x ,..., x : x A 1 2 n i i for all i 1, 2,3,..., n . Note that in the definition above the number of elements of any Ai may not be finite. Fundamental Principle of Counting Given an event or experiment e where it can be considered as a finite number of steps where at each step there are a finite number of choices or options then the total number of outcomes of experiment e is equal to the product of the 123 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 number of choices for each step in e to complete the occurrence of event e. [e] Given an event or experiment e that can be considered as a finite number of steps n and assume at each step there are a finite number of choices or options define its sample space S as the collection of all outcomes of event e. Let Ai be the collection of all options for the ith step of experiment e and assume it is a finite set for any i. Define the sample space S of e as n S Ai i 1 x , x ,..., x : x A 1 2 n i i for all i 1, 2,3,..., n and note the cardinality of S follows by the Fundamental Principle of Counting if the order of the steps in experiment e matter. Theorem of determined cardinalities for finite experimentation’s sample space under permutation Given n S A i 1 i and if the order of the steps in experiment e matters n in the production of its outcomes then S i 1 A i . Theorem of determined cardinalities for finite experimentation’s sample space under combinations 124 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 n Given Ai and if the order of the steps in experiment e does not S i 1 matter in some cases for the production of e’s outcomes then n S A i 1 i . Given a sample space S n Ai let i 1 T S be its tree diagram or lattice [L] given by the ordinate relationship by subscription with the relation of inequality applied to consecutive tuple elements for all n x A i 1 i . Let x S then x is an outcome of experiment e with the Cartesian product set S as its basis [b]. x represents a unique path or branch in the tree diagram T S if and only if x is considered as a permutation of tuple entries on the product n A i 1 i and the order of steps in e has meaning in the outcome that x represents in experiment e. x represents the number of combinations on its ordinate tuple values on the product n A i 1 i in the tree diagram occurrence for the tuple entries in for experiment e. x T S if the order of has no meaning in its outcome Or x represents a unique path or branch in the tree diagram T S if and only if x as an outcome of experiment e is a unique. 125 UNIVERSITY MATHEMATICS t(1994) x T S. Zoch c. t( x )2012 does not represent a unique path or branch in the tree diagram if x as an outcome of experiment e is not a unique. S n Ai let Given a sample space S E S i 1 E be an event so that . represents the collection of all outcomes of experiment e given some specific condition(s) on outcomes of e that may or may not be equal to all possible outcomes of experiment e with its given generalized initial conditions represented by S . E n Ai let Given a sample space S E S i 1 E then we define the probability [p] of E P E S be an event so that denoted and equal to E . n Ai let Given a sample space S E be an event so that E S then there exist sets E , E , E ,..., E so that E A all i=1,2,3,…,n so that E E and E E . i 1 1 2 3 i for n n i 1 Given a sample space S i n i i 1 n Ai let i 1 E and i F be events so E , F S then define the probability of occurrence of event E F denoted and equal to P E F P E P F / E P F P E / F where that and P F / E is the conditional probability of the occurrence for event F given that event E has occurred and P E / F is the conditional probability of the occurrence for event E given that event F has occurred [h]. 126 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 Probability is the use of combinatorics, set theory, and lattice theory and can also be considered with subsets of the Euclidean N Spaces. Probability is a young area of mathematics and has existed only for the last 200 years or so at this point and therefore many text books vary greatly with definitions. Probability has its most accurate applications in quantum theoretical physics and is used in actuarial sciences, economics, game theory, numerical analysis, and chemistry. Probability produces a source of understanding random events which may not be comprehended in their totalities. Experiments and Sample Spaces The sample space of any experiment for probability is a set of real numbers or non real elements or a set of n tuples from a product space of sets which may or may not contain real numbers and any have other unreal elements called a data set or sample space . Events are cases of outcomes for given experiments. Probability uses set theory, ratios, and the fundamental principles of counting (combinatorics) to describe chances or likelihoods for given events or experiments in theory. Probability uses thought experimentation or creative imagination. Any probability of an event for a given experiment is the ratio of number of ways the event may occur as an outcome from the experiment to the total number of ways the experiment itself may conclude. 127 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 FUNDAMENTAL PRINCIPLE OF COUNTING Given any event or experiment which can occur as a series of steps or stages where at every step there is a finite number of choices to proceed to the next step then the total number of outcomes or conclusions to the event or experiment is the product of the number of choices which can be taken at each step or stage to conclude the event or experiment. Permutations and Combinations A permutation is a list of elements where the order from left to right makes a difference and the number and type of elements listed does matter. A combination is a list of elements where the order from left to right makes no difference and the number and type of elements listed does matter. The number of permutations is always greater than or equal to the number of combinations for the same given elements. When creating the sample space of a given experiment it is best to consider does the order of choices when considering outcomes make a difference or no difference and is there replacement or no replacement when making choices for steps or stages to derive outcomes (that is can the same choice be made more than once at any step (replacement) or only once ( no replacement) at any step). 128 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 Empirical vs. Theoretical Theoretical Probability We assume for any given set A that all equivalent forms of any element x of A are only counted once or considered as equivalent when we list or write the elements of A. Empirical Probability or Statistics We assume for any given set A that all equivalent forms and quantities of any element x of A are all listed and counted each time they occur in A when we consider and write the elements of A. The set A is called a data set and is a subset of the real numbers or some product space of real numbers. INCLUSIVE AND EXCLUSIVE EVENTS Two events E and F are mutually inclusive if their set theoretic intersection is not empty. Two events E and F are mutually exclusive if their set theoretic intersection is empty. CONDITIONAL PROBABILITIES Statistics 129 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 Statistics is the empirical application of theories from probability. Statistics is one of the youngest areas of mathematics and has existed only for the last 70 years or so at this point and therefore many text books vary greatly with definitions and examples are usually numeric and complicated in nature. It is useful to know how statistics are used, manipulated, and interpreted . It is also useful to consider who is creating and using statistics as they can create bias in the experiments, results, interpretations, and applications. The sample space of any experiment for statistics is always a set of real numbers or a set of n tuples from a product space of real numbers called a data set. The outcomes from an experiment of statistics is called the data set S. The mean of a data set is the average of its elements or that is add all elements and divide by the number of elements. The mode of a data set S is the most frequently occurring element(s) or does not exist if there is no most frequently occurring element of the given data set S. A data set may not have a mode or may have one or a finite number of modes. The median of a data set S with an odd number of elements is the middle element when the elements of S are listed from left to right in an ordering. If the number of elements of a data set S is even then its median is the average of the middle two elements where all elements of S are listed in order from left to right. 130 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 It is interesting to note that when the number of elements of a data set S is even that its median may not be included in the data set S itself. If the number of elements of a data set is odd its median is always included in the data set. Nomality Given a sample space S let E be an event so that E S then we define the Nomality of E denoted and equal to and if E S define that N E 1 N E 1 1 S E S/E . Implying that the empty set is with non zero nomaility at every event all the time and that any event of one less cardinality than the sample space is certain in propensity at some times. Empty set is a subset of every set and the possibility that an event may not occur or become completed is possible almost always. Nomality of an event is the reciprocal of the cardinality for the event’s complement in a finite sample space. Theorem Given a sample space then 0 N E 12 S or let E be an event so that E N E 1 . S Theorem Given a sample space S let E be an event so that E S E 1 , E S 1 or E then N E P E . if 131 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 Theorem Given a sample space S let E be an event so that then 0 N E N S / E 2 . E S Theorem Given a sample space S let E be an event so that E S E or E S 1 then 0 N E N S / E 1 . if Theorem Given a sample space S let E be an event so that then N E N S / E 1 if and only if E 2 and S E S 4 . Theorem Given a sample space then N E 1 S S let E be an event so that E S 0 . Given a non empty sample space S in existence implies an event or experiment that happens as a finite number of steps where at every step there is a finite number of choices or the case of an outcome or no outcome observed over finite time by given standard observer(s) and conditions. Nomality suggests the null event (that no step or choice is made at some time or no observation is confirmed nor denied) is not unlikely always at any event’s conception, construction or consideration over future time or in the past for all conditions. 132 UNIVERSITY MATHEMATICS t(1994) Given a sample space S let S. Zoch E be an event so that E S then nomality and probability are undefined or N E 1 0 c. t( x )2012 P E 0 0 and . Probability suggests that no outcome is produced at some time or the null event is never likely at any event’s consideration where outcomes are generated or observed at any times by every observer and conditions. Given a sample space then 0 P E S S let E be an event so that E S 0 . Theorem Given a sample space S let E be an event so that then N E N S / E 2 if and only if E 1 and S E S 2 . Nomality is a much better measure of propensity for events where specified from the generalization of the event’s conditions. Nomality does not disagree with probability except in exact real number values and specifically only in the case of an event with one less cardinality than the sample space or the null event. Nomality still resides in a theory of fairness and equal likelihood that is not always evident in the real world or the games and experiments of men. 133 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 Theory of probability must account for ratios that are a priori, manipulated, incalculable or immeasurable. Much information is gained by comparing the probability and nomality of events. Theorem Given a sample space S let then lim N E 0 . E be an event so that E S E be an event so that E S S / E Theorem Given a sample space then lim N E S let . S / E 0 Formality Given a sample space S let E1, E 2, E 3,..., E n be events so that E i S for all i=1,2,3,…,n and S n E E for that F 0 and let F E be a real number i 1 any i j then define for all i=1,2,3,…,n F E i 0 if E i or if E i E i with i j i 0 F E 1 . Define the formality of S as the positive real number S F E or 0 . so that i n F i i 1 F Theorem Given a sample space S then 0 S F S . Formality of Probability theorem 134 UNIVERSITY MATHEMATICS t(1994) S. Zoch Given a finite sample space S events so that let E i S for all i=1,2,3,…,n and c. t( x )2012 E , E , E ,..., E 1 S 2 3 n be n i 1 E i with E E for any i j then define for all i=1,2,3,…,n that F 0 and F E 0 if E or if E let F E P E S F E 1 or 0 . i j i i i i i n F i 1 i F Note that the theorem of formal probability stated above implies that S represents the equally likely outcomes of an experiment or event. n In reality every one knows that S F F i 1 E 1 i when actual observations of outcomes for most experiments are produced and observed outside of theory and in most laboratories or conditions. Formality suggests the null event (that no step or choice is made at some time or no observation is confirmed nor denied) is unlikely always at any event’s conception, construction or consideration over future time or in the past for all conditions. If S then S F 0 implies there is a non event that will not occur for any propensity to observe outcomes. Theorem of Real Probability Formality of any finite or empty sample space assignments subsets. E of S S is free from all into mutually exclusive events or disjoint Axiom of Fairness 135 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 Where any result is equally likely to be observed as only one outcome of an experiment by any observer every time at all conditions the event or experiment producing this result is called fair and the outcome or a trial is called singular. It is interesting to consider the limits of nomality and probability as the number of trials of an experiment goes to infinity or S for a singular outcome or otherwise. example Consider the case of rolling a fair six sided die. We assume it is fair so that there is only one chance that any side may end up over another. It may also be assumed that a die can be constructed with six sides so that only one side is always likely at any roll for anybody anywhere. example Lottery can be fixed so that the outcome is known at every draw by cheating. example S 1 , 2 , 3 , 4 with E 2 , 4 then N E P E and N E N S / E 1 . Let S 1 , 2 , 3 , 4 implies an experiment such as: Roll a fair four sided die with 1,2,3,4 on the sides respectively where any side is equally likely to be observed as only one outcome of any roll of the die by any observer every time. The nomality and probability the roll is an even number are equivalent in this case. 136 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 Primal Statute Given a real number greater than five called x then the probability it is a prime number is less than or equal to 2/5 and the probability that it is not a prime number is greater than or equal to 3/5 with respect to base ten expression of x in finite time and arbitrarily large values of x. Proof Let N= 0,1,2,…,9 and B=1,3, 7, 9 and B’=0,2,4,5,6,8 Then P(B)=4/10=2/5<3/5=6/10=P(B’). Prime Propensity Given a natural number x written as base n expansion with n is a natural number greater than two then as n increases the probability of determining if x is a prime number in finite time with respect to the given base of n decreases for arbitrarily large values of x. Prime Base Ten Limit Given a natural number x greater than nine expressed as base ten then if its ones position is not one, three , seven, or nine then it is not a prime number. Proof 137 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 Rules of divisibility by counter example. Theorem three end prime Given a natural number x then if its ones digit base ten is a three then x is a prime number or a product of three and a prime number with its ones digit is a one. Theorem nine end prime Given a natural number x then if its ones digit base ten is a nine then x is a prime number or a product of three and a prime number with its ones digit is a three. Theorem seven end prime Given a natural number x then if its ones digit base ten is a seven then x is a prime number or a product of three and a prime number with its ones digit is nine. Theorem one end prime ( other) Given a natural number x then if its ones digit base ten is a one then x is a prime number or a product of three and a prime number with its ones digit is seven. Three prime divisibility t1 138 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 Given a natural number x written base ten then if it has its ones digit is one, three, seven, or nine then x is divisible by three or x is a prime number. Theorem of prime governance t2 Given a natural number x if its ones digit base ten is one, three, seven, or nine then x is a prime number or the product of three and a prime number with its ones digit base ten is either one, three, seven, or nine. Theorem ones end Given a natural number x not equal to one if its ones position is a one and the sum of its digits is not divisible by three then it is a prime number or it is the nth power of a prime number with n is a natural number. Definition epsilon Given a natural number n then define the nth prime ordant as the collection denoted and equal to w n p : p is a prime number with p x y and x, yn . Definition row Given a natural number n then w is the number of prime numbers so that x+y=p and p is a prime number and x and y are less than or equal to n. 139 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 The number w is the cardinality of wn . Definition phi Given a natural number n then s is the number of ways a prime number p can be expressed so that x+y=p and x and y are less than or equal to n. Example If n=6 then wn 2,3,5,7,11 , s=8 and w=5 . Example If n=5 then wn 2,3,5,7 , s=6 and w=4 . Question 110 Given a natural number n then what is the number of ways s a prime number p can be expressed so that x+y=p and x and y are less than or equal to n? Question 111 Given a natural number n then what is the number of prime numbers w so that x+y=p and p is a prime number and x and y are less than or equal to n? Question 112 Given a natural number n what is the probability of selecting two natural numbers less than or equal to n so that their sum is a prime number? Example 140 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 Select two natural numbers less than or equal to 6. What is the probability that the sum of the numbers is a prime number? If n=6 than the probability of selecting two natural numbers less than or equal to six that will add to a prime number is 8/21 . Example Select two natural numbers less than or equal to 5. What is the probability that the sum of the numbers is a prime number? If n=5 than the probability of selecting two natural numbers less than or equal to six that will add to a prime number is 6/15 or 3/5 . Imaginary Graphs and relations to Probability Given a graph it is non polar, polar or multipolar. A graph is non polar if it has only one vertex so that every edge is a loop or multiloop. A graph is polar if it is well defined on a finite number of vertices with edges that are only two element subsets or tuples that represent it edges. A graph is multipolar if it is well defined on a finite number of vertices with edges that are only r element subsets or r tuples that represent its given number of edges and r may be greater than two. 141 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 Given a graph it is either empty finite or infinite. If a graph is finite and polar then it is in the category that is accepted in current well definition of mathematics and its communities. Otherwise the extension of graphs’ categorical definition may be well defined as implied by the existing category of probability of events that exist in a finite number of steps where order does not matter with replacement that is not a permutation, combination and outside of fpc where order matters. Cn2=(nxn-n)/2 binary watchit Theorem or number of polar finite graphs Given a natural number n greater than one then the number of ways to select 2 objects from n objects with replacement so that the order of selection does not matter is w n n n . 2 2 n 2 142 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 Proof The number of ways to select two objects from n objects where order matters with replacement is nxn by fpc. The number nxn includes counting of n pairs of two objects selected from the given n with replacement as n=1xn by fpc . nxn-n is the number of pairs of two objects selected from n objects without replacement where order matters. nxn-n is divisible by two as only two objects are selected as pairs from the given n objects. (nxn-n)/2 is the number of ways to select two objects from n object where order does not matter without replacement ( or the number of combinations cn2). Whence wn2=(nxn-n)/2+n is the number of ways to select two objects from n objects where order does not matter with replacement . wn2 is called the binary watchit . Wn2 is the number of graphs that are not mutipraphs including loops and cn2 is the number of graphs that are not multigraphs and are loop free. The number of non polar graphs is unitary or one and may be homeomorphic to the infolate. 143 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 Conjecture Watchit number Conjecture or number of multi polar finite graphs imaginary graphs or multipolar graphs Given a natural number n greater than one then the number of ways to select r objects from n objects where r is less than or equal to n with replacement so that the order of selection does not matter is w n n n . r! r n r Wnr implies the existence for definition to extend the categories of graph theory into graphs that have edges that may not act or relate through only two vertices’ connections. Time Free Event Theorem If a non empty graph has an edge that is a loop then it is time free. 144 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 Event Particle Theorem If the tree graph Gs of a sample space has a path that is a loop then its outcomes are time free and the graph is a non trivial Euler circuit that is nonplanar and homeomorphic to a singleton in R3 with natural topology also possessing non trivial fundamental group and having fractal dimension if the event requires an infinite number of steps to every outcomes completion called an infolate. Consecutive Sums The set of all numbers that are equal to the sum of two consecutive natural numbers called the set of consecutive sums C does not contain the natural numbers one and two so that it is not equal to the set of natural numbers N. It is a fact that not every natural number is equal to the sum of two consecutive natural numbers like 6 for example. Prime consecutive sum exclusion theorem P is not equal to C where P is the set of prime numbers and C is the set of consecutive natural number sums. Proof Not every prime number is the sum of two consecutive natural numbers as two is an example because it is prime 145 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 and 2=1+1 so that it is not in C. Not every element of C is prime as 15 is and example as 15=7+8 and 15 is not prime. Consecutive Sums Conjecture The sum of two consecutive natural numbers is prime if and only if it is not divisible by a prime number less than the sum itself. One implication of the consecutive sums theorem/conjecture may be equivalent to the prime factorization theorem for natural numbers. The other implication suggests the probability is great that the sum of two consecutive natural numbers is prime where the summands are each selected randomly. Summand Prime Probability corollary When the value of the sum of two natural numbers increases the probability that it is a prime number decreases. If the Riemann hypothesis is true then the Summand Prime probability corollary will be a consequence of the Riemann Theorem or a slight variation of its given statement of the hypothesis probably including the number four. T(2/10/2012) 146 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 Calculators, Computer Software, and Technology Each student should be proficient with at least one scientific calculator. A calculator should not be required for the student to comprehend algebraic expressions and how their symbolic forms are changed through representations with the given binary operations. A calculator should not be required for the student to comprehend how variables are used in abstraction to signify other objects. A calculator should not be required to multiply any two integers between zero and twelve or find their squares through 12 and cubes through 5. All students should be proficient with more than one brand and type of calculator and computer program. It is desirable that students could accurately use any or no calculator to produce results at all times. Every person should be able to use any calculator by trail and error. 147 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 Use of only one type or brand of software or calculator only limits one’s user capabilities and promotes that brand or type exclusively. Learn all technologies, their ranges of applications, and of their interconnections. Be able to use any computer, print, scan, fax, and archive your electronic data. Use and know a large part of the vast depth of knowledge available through the world wide web. STUDY SKILLS, LEARNING METHODS, AND STRATEGIES FOR STUDENTS Please make sure you understand your best learning style(s) and are able to adapt to any teacher’s methods with ease. Don’t make excuses to get out of your responsibilities. Do what is expected of you from all your teachers without question. Make sure you are prepared for all your classes at all times. Explore all learning styles new to you and ideas such as public speaking, writing/drawing/art, theatre, music, sports, and dance. You should be able to read any language. You should be able to read at least one written and at least one symbolic measurement (metric) language such as numbers (basic arithmetic) . 148 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 Ability to read, speak, and write in more than one language is a great resource to levy for a job that you want. Know your skills and be able to demonstrate this in a professional manner. Ability to speak in more than one language should be required by all schools. Ability to physically write or express writing in hand written format without technology in at least one language is essential. Ability to physically write in any form, language, and system is optimal and never to be forgotten or dismissed by any person or people. Ability to physically write with all programs and machines in at least one language is usually ok. Type writer skills are most useful in our modern day technology driven environment and a personal favorite course of the author in High School. Proficiency with at least one word processing program is desirable and usually expected. Produce projects using all sorts of electronic methods and media to reach any audience. Practice presenting many presentations orally and graphically before an audience with different methods. Proficiency with any technology and computer program is the best way to manage any career. Be able to write descriptively, creatively, confidently, and correctly with proficient ease and abundance. 149 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 Try to dress well and be fresh and clean whenever possible. Always have an answer even if it is ‘I’ll get back to you on that’, and do it if you have to say it. Be yourself and develop many styles, hobbies, and skills as you are able and make ways to do so more often. Always be respectful and kind to your teachers and friends and instill these values in yourself and all your parents, children, cousins, and siblings whenever possible. Never hate or be jealous as these are a waste of time and unhealthy. Never hate mathematics and/ or science or say this especially in the presence of sons, daughters, brothers, sisters, nephews, or nieces. Respect all copyright and legal agreements. Have a good dictionary close at hand as the internet is not reliable for definitions and most software programs also lack word definitions and only offer spelling options. Have respect towards all your fellow classmates and instructors at all times and treat each other kindly. Your parents, instructors, co workers, elders, friends, teachers, and mentors are always trying to help you and do not ever deserve rudeness, hatred, cruelty, or disrespect of any kind as these actions can only put barriers before your learning and growing showing you in a most unfavorable light and not impressing your peers, family, or potential employers in a productive manner. Always remember and apply all the good things you ever learned and keep an open mind for other knew great ideas and listen to those who know more. 150 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 Don’t ever take mean angry words, or gestures to heart or worry so that you have no burden(s) and give no power to their speakers and/or gesturers. Stand up for yourself, your family, and those you love all the time without failure so that people know you are upstanding and having great principles, strengths, and good ethics. Never get bored as this means you are boring. Use your time efficiently and productively always. Develop superb ethics, morals, and principles and strive to learn more always from many people and the past and never judge. Read all kinds of literature and know the news or world events. Do not believe everything you see and read all the time and question sources, motives, and politics of journalist, corporations, and news programs sometimes. Learn sales and marketing strategies and schemes and do not be manipulated by them to your disadvantage by commercial entities, businesses, and corporations. Stand up and protect all your rights and know them. Considering that people should have more rights as technology develops where it may threaten our well beings, freedoms, and livelihoods help develop and speak your mind so that human rights are truly inclusive and just every day. Always vote and participate and understand politics to take care of our Nation and societies for our futures in world peace. Have more than one role model or hero so that you are never let down in your aspirations. An example of a great hero is ... Remember that perfect attendance, excellent attendance, and superbly studious behavior may be considered by most teachers. 151 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 Try and take good notes to practice the most useful skill of handwriting. Please try to attend all your lectures in courses. Have no tardiness and do not make interruptions in classes as this is distracting and inconsiderate to other students. Please raise your hand if you have questions or be polite when speaking. Do not use obscenities in the classroom as this is unprofessional and not good speech offending many. Don’t be distracting, inconsiderate, or the center of attention in class time as there exist other students beside you and such behavior is selfish. If you need attention find productive ways to get it in your own time and take a drama or speech class and express yourself in a healthy way. Know your assignments, deadlines, and exam dates as a responsible student. Do not cheat or plagiarize. Learn to be more creative and resourceful. A second opinion or a proofread of assignments can be most valuable as it is often extremely hard to find or note our own inadequacies and mistakes. Make up any work missed due to every tardiness and absence and be responsible for all information such as notes. Skim or scan through all assignments at least if you do not have time for careful study. Try all the time to get the big idea(s) or picture(s). Remember school is your responsibility and commitment and in the end you can only rely on yourself especially in graduate school. 152 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 Remember that school does not last forever and if you make the required commitment and do your work it will end in short time with your graduation, laud, and great profit. Never give up on any dreams or goals you have determined for yourself as persistence is a quality you want. Please try to respect and not judge any one else’s religion, morals, or ethics as it is not good business. You will never know or understand completely any person’s full past, culture, and/or circumstances so that disrespect and judgment are unwarranted or unfounded. Always talk to people. Know how to write letters and send post through the mail as it is more efficacious than any electronic format or procedure to make contact. Know the limits of video and audio recordings and their applications. Have the best respectable behavior in social situations with regards to technologies such as cell phones. Be proud of the people in your life especially your mother all the time. Be proud of all the great things you have ever done and look forward to more and the future. Go to cultural events periodically where tickets can be reasonably purchased which include and are not limited to theatre productions, symphony, band performances, ballet, operas, museums, and poetry or literary readings. Learn how to be studious and professional. Know how to document any resource materials used in projects or papers correctly and do it if you borrow from other places so that you have no plagiarism. 153 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 Never begin or end a sentence with a preposition. Always act and conduct yourself like a professional, ethical, and respectable person. Do not be quick to act if time permits consider options otherwise develop the ability to make swift decisions when necessary and produce viable results and data. Smile at least once in an interview, dress very well, and look great. Watch your words and monitor your gestures carefully in interviews. Be politically correct and decent in interviews. Always introduce yourself and don’t be shy. Keep an active portfolio, vitae (resume), and have relevant job experience with skills in your chosen profession. Write and keep a journal, diary, notebook, sketchbook, or log to reflect upon yourself and your life. Use all your talent to make a great, happy, productive beautiful life and brilliant career for yourself all the time. Make school your first priority and devise means to have stability in life almost at any cost which is required for your successful graduation and job placement. Make sure you drop a class with paperwork if you believe you will fail before the drop date or if unpreventable circumstances prohibit its completion so that you receive a W instead of an F on your transcripts. Keep track yourself of all your grades in every class written in your notebook so that you have a record of your works. If you need help ask more than one person without shame until you get what you need. 154 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 Ask for help when you need it. Try to have no debt or as little as possible. Try to get a grant, scholarship, or funding to pay for school and your necessities. Never quit or give up. TEST ANXIETY AND MATHE. PHOBIA Precepts of Test Taking 1. 2. 3. 4. There should be no talking during any test or quiz. Always be on time for every test and prepared that day. Submit your completed work on time or before required time. Look over your work before you hand in any exam as it will not be returned after submission until it is graded. 5. Teachers have at least two weeks to grade and return papers or assignments. 6. After you submit your work exit the classroom. 7. No use of cell phones or laptops during exams. 8. Follow and satisfy the directions of the exam. 9. If you miss an exam return directly to the next class meeting. 10. Do not leave any question blank. 11. Clearly denote your answers or have neat work. 12. Put your name on your paper. 13. Do not cheat and keep your eyes on your own paper. 14. Study well in advance and know the expectations of the exam. 15. Take any test without fear and do your best. 16. You can and should overcome test anxiety and math phobia with an effort if you seek help and try. Every one does not like tests and experiences anxiety some times. 155 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 Every one is a little or a lot intimidated or scared by mathematics at some time. Most overcome anxiety and phobia by trial and error and repetition. Realize that test taking is an acquired skill and move to gain it. Please learn how to take a variety of differently presented tests, quizzes, and exams and produce great results. Learn as much about an exam as possible and practice its required styles and techniques well before the exam date. Study and take exams and tests seriously and only for what they are worth. Learn the number of questions, question presentation format, date, time, location of exam, type of answer format(s), time limits, required materials you must supply (example calculator or no calculator, or pencil), what is supplied, calculator and technology parameters if possible. Study well before the exam material over which it will cover and prepare early. Find and practice any sample test(s). Know what it feels like in exams and practice these disciplines and conditions. Create your own practice test and ask advice from colleagues and friends. Buy a moderately priced review book (workbook) from a store where it is available especially if it directly accompanies a standardized test such as the Graduate Record Examination ( G.E.D.) required by excellent graduate schools worldwide. Use the workbook please. 156 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 Most standardized tests such as GED have very specific question presentations and strategies to derive answers and complicated presentations of results which make a help workbook where available most valuable. Most standardized tests such as GED have multiple choice answers which require scantron input. Multiple choice answers require you to use elimination strategies so be familiar with them. Practice using a scantron input bubble sheet with no. 2 pencil very carefully. Have a small pencil sharpener and eraser if you need one. Taking exams requires strategy, patience, confidence, skill, effort, and mastery over fear and anxiety. Study well before an exam not a day or hour before it starts. Study in groups only if it helps you to learn if not then make a good place with good lights, quiet, and space for your books (papers) without interruptions and a small drink or snack if possible. Study every moment and as many others possible exceedingly weeks or many days before an exam and/or test so that you are prepared. Seek out the help and advice of all others who may have taken a given test. Be respectful of proctors and all teachers who help you and to your fellows all in the same station as yourself. Don’t stay up too late before an exam so that you aggravate your normal routine and schedule. Please make sure you are able to eat well and be rested before you take a test. Take good care of yourself. 157 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 Read-skim over the entire test when you first receive it to put the total situation into your mind. If you are stuck do not spend more than three minutes on one problem without any advance. Leave unmanageable problems and go to others and return to them later. Try a fresh approach to a difficult problem. Stand up for a brief moment to stretch and breathe and return to your seat. Drink water when you can. Draw, scribble, and use scratch paper and pictures to help yourself. Do not proceed with many different methods until you are sure the one you are using is not sufficient. Try one method and if this produces answers which do not make sense try another method until you can reach an answer. Never give up. Don’t try to do too much at once or too quickly. Take a deep breath, relax, and know a test can only last for a small portion of your life then there will be no more momentarily. Have faith and confidence in your work and yourself. Be polite to all people taking an exam with you please. You are smart and every body can do and understand mathematics. All works with math will usually end up at a task which you already know how to do so the key is to get to that point in the work, recognize it, and move forward to finish the problem not being overwhelmed. 158 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 Remember you have done mathe. your whole life and you are good at it. Don’t forget what you know and recognize when you start to panic and control yourself some way. Remember that you have multitudes of knowledge and experiences always in yourself from all the schools and tests you have ever attended or taken for many years and use this now to your advantage taking great confidence from this fact. Remember you want to succeed and your family and friends want you to graduate and be successful. Remember one plus one is two. Have humor and take life lightly when you can. Smile sometimes even if it is hard to do it. Check your answers and work extremely carefully before you turn in an exam even when you wish to flee. Make sure your name is on your paper please. Submit the test making sure you have done everything expected of yourself. Get a drink of water and put some on your face and take a deep breath. You did it and be proud of that no matter what the results. Relax and treat yourself to a good indulgence if you did well otherwise don’t give up, keep studying, and prepare for the next test and/or final. 159 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 Study Habits and Tutoring Help Make friends in your classes for study groups, teams and help with notes. Working in teams and/or groups is great for presentation or exhibition of projects and reports promoting professional business etiquette and poise. Please seek out support, stability, and quiet so you can study alone without interruptions sometimes all the time. Make time for the most important goals and dreams of your life. Please seek out support, stability, and persistence from all sources to guide and aid you in your studies in school these can include friends, family, and co-workers. If you need help please do not miss classes. Please stay after class to talk to your teachers if you need help or have questions. Seek out help immediately and do not wait until the last minute if you need assistance. If you are frustrated when you study go to another problem or take an example from the book and practice by copying it directly as this helps with comprehension and handwriting. Use other books, manuals, or workbooks to copy examples or the text directly onto paper contained in this document or otherwise written as an exercise of hand writing transcription. 160 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 Try different studying techniques to see how you are strongest and most effective. Take small periodic breaks to momentarily relax when you study. If you are having any difficulties with the subject matter for example you can ask your instructor to give you information for resources that will make your academic experience a success such as free tutoring or other learning media. Use the internet, computers, video tapes, friends, classmates, family, tutors, teachers, and books to get the help you need. Please help us create a friendly, kind, and good environment for our campus and classes. Mathematics, Attitudes, and Learning As your attitudes affect yourself and those close to you directly where learning is concerned good attitudes towards mathematics, learning, and sciences are extremely valuable. Please find positive aspects of mathematics and promote its students. You should practice your handwriting with the homework problems and by taking good notes in class, as mathematics is a universal symbolic language, which makes transcription almost entirely necessary for good results. Why do we study mathematics? When will we ever use what we learn again? What purpose does mathematics serve? 161 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 These are the most important questions you can answer to help your mathematics education be a success. There are good reasons why we study the areas of mathematics and logic. As part of important and essential data for humankind’s welfare mathematics is required in all degree programs of respectable institutions of higher learning as culture. Culture is the perpetuation and maintenance of knowledge. As part of logic and technology mathematics is essential for deductive analytic reasoning and symbolic manipulation using comprehension in abstraction. The study of Mathematics strengthens our abstract reasoning facility and allows us to understand symbolism and abstraction which can be used in meaningful and powerful ways. Understanding mathematics allows one to interpret legal literature and use computer programs more easily than if we do not understand. As mathematics enables the viable transcription of abstract symbols and language in forms where technology may not be present or fails for this reason we wish to learn its applications. As mathematics allows one to use proper variable substitution into formulas of mathematics for their relation to all sciences where calculation through order of operations agreement produces accurate results we wish to learn these applications of mathematics. Mathematics allows learning of analysis for complex abstract situations. Mathematics allows accurate and efficient organizational skills for reasoning of complex events. 162 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 Mathematics helps us understand and interpret technical graphs, charts, diagrams, and figures. Mathematics teaches us to collect, arrange, and analyze data and samples. Mathematics teaches us to use creativity and imagination in productive and critical directions. Mathematics teaches us to use thought experimentation. Mathematics allows skills beyond the direct applications we will study. Methods and skills gained by learning mathematics are useful beyond their vehicles of presentation. Mathematics helps us understand chemistry, physics, biology, and medicine. Analysis and creativity through imagination are enhanced by being able to apply mathematics. Using mathematics we can utilize money, business, accounting, sweepstakes, odds and games. Complex charts and diagrams which are used for weather, sports, and money markets are understood by the study of mathematics. Proficiency with mathematics and logic allows us to understand and create forms and documents and interpret them. Proficiency with mathematics helps us utilize algorithmic procedures and schemes to satisfy goals with strategies. Mathematics helps us understand units and measures and their conversions with applications. EXPERIENCE 163 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 Please join professional organizations such as www.ams.org national organization. it is a There are several branches of the ISA. They include controls, robotics, automotive, wastewater, and power. They also host trade shows. Membership in ISA – be a part of a mentorship. Membership can help when students are working on a class project. Resume writing tips also can be learned. Several different courses are offered. Try to maintain work experience related to the field of work you choose for your professional resume. Develop an electronic portfolio and start to keep a working vitae or resume. Learn how to go through interviews and have business etiquette. Make sure you are familiar with modern marketing, sales, strategies, and customer services. Get an internship in your chosen career area and gain much related work experience so that you have at least three current letters of recommendation always. Most importantly research the relevant skills and knowledge which will be required of you in applications for the career field you enter. Use the Library resources such as books, journals, and computer resources available to you. Read books, journals, and magazines relevant to the career field you wish to enter. Abstract Any equations, laws or formulae which are fundamental to physics have many mathematical implications beyond their known or accepted interpretative meanings and these cannot be discarded in reality as their conditional truth is verified by experimental evidence and the laws and axioms of mathematics exist beyond the realms of physical sciences and computers. What cannot be determined (experimentally) cannot be discarded and most often yields important information concerning the truth. The equation e=mc2 is demonstrated in physics where its variable assignments are given the properties of units of energy and mass with the speed of light held constant. Graphs of the equation e=mc2 in the real Euclidean plane when the 164 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 freedom of the individual variables is constrained or given representations other than those of standard physics (yet validated by mathematics) have interesting real limits. These limits give insight into the nature of matter and time where relation to the absence of energy or mass or the vectors of electromagnetic radiation are negative and exist. Conservation of energy and mass implies that where there is an absence or deficit of some units of mass or energy equilibrium occurs where the surplus of these units of energy or mass are taken to make up the difference and not necessarily at the same locations. Black holes may be considered as the absence or deficit of energy and mass. Electromagnetic radiation considered as a vector with direction and magnitude exists in lines of force and otherwise it is reasonable to assume that the negative of such vector unit amounts may apply to physical theories as the opposite of a vector is well defined in real analysis. Light has that its speed is not constant near or in a black hole or when transmitted through super cold mediums and only constant in a vacuum. Light is also non linear in its paths due to gravity. Mass and length are not constant at large velocities. Time is altered at large velocities. Perception and interpretation are not confined by all existing physical theories as some of them may be incorrect and they are all relative to human observation. Introduction Mathematics used by physicists and if truth is discerned this is certain for all such conditions as the laws of those such as Maxwell, Newton, and Einstein must hold [phy1] in their cases. Vast areas of mathematics exist not utilized or known to most scientists who are not also mathematicians so that it is incorrect to say the mathematics does not exit to satisfy the unification of the physical forces. The theorems of the great mathematicians Paul Erdos [e] or A. Lelek [top] contain many statements yet unexplored and of interest for scientists who are willing to understand them for example concerning Ramsey theory and dimension theory. It may be determined from existing formulas of physical sciences many statements that seem strange yet are valid mathematically as that which is currently known or understood by men under the empirical process’ determination is not total and can never be complete [godel]. Mathematics is the Mother of all sciences and indiscriminant, incorrect or invalid applications and uses of her axioms and/or laws are never sanctioned by any mathematician or computer over all time. Order of operations agreement is held across the world by everyone so that there is well definition [royden] in computation for example. Logic is the Father of the sciences’ empirical process and technology its mandates cannot be violated by nature or engineering yet only in human imagination. If the mathematics for some given existing formula of physics yields statements or implications that seem nonsensical to physicists these may not be discarded as they are most likely applicable somehow based on the validity of the instances where the given formula is true and note that nothing is wasted in mathematics as the remainder is given the greatest meaning in the fundamental theorem of Algebra [Hungerford] and the freedom of variables taken as axiomatic. Any mathematics or technology used by physicists, financiers, or scientist should never be used incorrectly, irresponsibly, partially or to the detriment of humankind, freedom or life in the future or on the Earth. Standard models used to understand the propagation of energy such as light or electromagnetic radiation use linear rays and where rays are non linear, directed, and terminated they represent lines of force [physics] such as magnetism or directed paths in graphs [graph]. Energy propagation from a point on the boundary of an object may or may not follow a linear path like a ray [Royden] but may also propagate in a non linear way such as radiant heat energy or solar flares [so]. All rays ending at a fixed point in a Euclidean space can represent the possible paths a boundary point may take over time due to some force placed upon the point at a source. Propagation of properties, energies, or forces directed from a point as a source at an existing boundary point for a given object through itself, its complement [set1] space or other objects located properly in its complement may be modeled with linear rays. Existential influence from an object’s geometry and topology while embedded in spaces effects the object’s complement space[set] and any other object contained in the given space, intersecting the given object itself or while placed in one of many possibly connected or disjoint other spaces for almost every standard observer at any time in almost every universal space or set axiomatically [foundations] in mathematics. Propagation of energy and/or force from existing boundary points of a given object effects the object’s complement space[set] and any other existing object. It can be assumed that no object has existential influence on any other object or its complement space unless it has at least one boundary point and if the collection of boundary points is empty that the object does not incur nor produce influence from the existence of any other object and almost every force. The above statement can be modified yet its acceptance can produce a viable theory for energy propagation, transmission, absorption, and reflectance [color2] using sets, Euclidean product space, topology, and linear real rays [ana]. Propagation of forces from an object’s boundary points may occur in a linear, non linear, or discrete way and possibly into other existing spaces which may not contain the given object or its boundary or be disjoint from any other space. 165 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 Granting properties to sets in a Euclidean topological space [top] or Euclidean topological product spaces which mimic the attributes of an objects propagation for its influences, properties, and energies into the space itself and with relation to some other objects in the space yield new models of physical phenomena involving the use of rays and facts of topologically normal space. Ideas that spaces, objects, and/or forces can be composed as unions of other spaces of lower dimension or intersections of spaces with higher dimensions or some combination or permutation thereof originates from the topologist Andrej Lelek [lelek] and teachers such as Knaster [knaster], R.Sinkhorn, and S. Fajtlowicz. Properties used for this model include transmission, propagation, and emission of energy (such as light), reflectance [color], absorption, and luminescence [spie]. Perceptive and reporting abilities of standard observers can be similar and communicated similarly at times and more than one such standard observer exists with these abilities is axiomatic. Assume that the conditions and positions of objects and standard observers can be held constant for time intervals of observations and replicated by other standard observers at similar of different times. Given a real object in physical real space the object’s complementary space is the collection of all the space that the object does not occupy at a certain given time as perceived by a standard observer which does not intersect the object or contain it. Given an object in physical real space its property space is the collection of all properties possessed by the object at a certain given time as perceived by a certain standard observer which does not intersect the object. Given an object in physical real space its complement property space is the collection of all properties not possessed by the object at a certain given time as perceived by the same standard observer given above. Given an object in physical real space the object’s indeterminant space is the collection of all properties not able to be determined for the object at a certain given time as perceived by any standard observer which does not intersect the object. The indeterminant space of an object includes all properties not able to be determined in our real physical universe with its laws yet also all properties not able to be determined in any universe with any set of laws as the location of the standard observer is not fixed other than they do not contain or intersect the given object and conditions can be considered as constant for a given interval of time. What is possible intersects that which is indeterminant and contains that which is determined for a given object over any time, location, and condition for every standard observer. If the standard observer’s and object’s locations are real or in our physical universe then what is indeterminant is controlled by our universal physical laws as an axiom. What can be determined absolutely is connected with questions of computation [c] and completeness [g] (Does p=np?) yet these definitions yield a means to consider relativity and models and gravity. More information concerning properties, standard observers, and conditions can be found in [zprop]. An object’s existence propagates properties to its complement space in a way that gravity, light and matter must obey with respect to a given standard observer’s perceptions due to Einstein’s General theory of relativity. Over intervals of finite time with acceleration placed on the object this relationship between the object, its complement space and the standard observer must yield to Einstein’s special theory of relativity [eee] . It is known that perception of properties effect the instances of objects and observers at the quantum level by Heisenberg’s uncertainty principle [h]. Key Words Source, electromagnetic, energy propagation, complement space, topology, real analysis, foundations of physics, standard observer, segmentation, graphs, paths, product space, continua, References 166 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 Pollock, Nomic Probability and the Foundations of Induction, Oxford, Oxford University Press, 1990, isbn 0-19-506013-x [l] Luminous and Reflective Sets, s. Zoch, Lumino.doc [n] Negative Light Vectors and the Deficit of Energy and Mass, A. Zoch, Energia.doc Probable Categories S. Zoch t(2007) Primordial Integers Stephen Zoch Primordial.doc C. t(2007) Devlin, K., The Millennium Problems, Basic Books, N. Y., N. Y., 2002. Royden, H. L. , Real Analysis, Macmillan Publishing Company, New York, 1988. Buck, R. C., Advanced Calculus, McGraw-Hill, Inc., U.S.A., 1978. Kramer, Mathematics for Electricity and Electronics, Second Edition, Delmar Thomson Learning: Albany, New York (2002). Devlin, K., The Millennium Problems, Basic Books, N. Y., N. Y., 2002. Royden, H. L. , Real Analysis, Macmillan Publishing Company, New York, 1988. Buck, R. C., Advanced Calculus, McGraw-Hill, Inc., U.S.A., 1978. Kramer, Mathematics for Electricity and Electronics, Second Edition, Delmar Thomson Learning: Albany, New York (2002). D. Boneh, “Twenty years of attacks on the RSA cryptosystem”, Notices of the American Mathematical Society 46(2):203—213 (1999). [J. Yepez, “Quantum computation for physical modeling”, Computer Physics Communications, 146(3):277-279 (2002). M. Luskin, “Computational Modeling of Microstructure”, Proceedings of the International Congress of Mathematicians, Higher Education Press: Beijing, China 3:707-716 (2002). R. H. Bing, “A Translation of the Normal Moore Space Conjecture”, Proceedings of the American Mathematical Society 16: 612-619 (1965). F. H. Croom, Principles of Topology, Saunders College Publishing through Holt, Rinehart, Winston: Orlando, Florida (1989). P. Alexandroff and H. Hopf, Topologie, Springer: Berlin (1935). s. Zoch, The Jordan Polygonal Theorem, a, Houston, TX (1994). Washington, Basic Technical Mathematics with Calculus, Seventh Edition, Addison Wesley:New York, (2000). J. Nagata, Modern Dimension Theory, Vol. 2, Heldermann Verlag: Berlin (1983). 167 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 F. Harary, Graph Theory, Addison-Wesley: Manila, Philippines (1969). A. Lelek, “Properties of Mappings and Continua Theory”, Rocky Mountain Journal of Mathematics 6(1):47-59 (1976). K. Menger, Dimensionstheorie, B. G. Teubner: Leipzig (1928). s. Zoch, Polygonal Cellular Continua, a, Houston, TX (1995). s. Zoch, Power Numbers, a, Houston, TX (2003). A. Zoch, Geometric Language, A, Houston, TX (2004). G. Cantor, “De la puissance des ensembles parfait de points”, Institut MittagLeffler, Djursholm, Sweden, Acta Mathematica 4:381-392; in Gesammelte Abhandlungen, pp. 252-260 (1884). s. Zoch, Harmonic Cellular Continua, A, Houston, TX (1994). s. Zoch, Total Rational Partitive Color Mixture Continua and Triangles, A, Houston, TX (1996). S. MacLane, G. Birkhoff, Algebra, Macmillan: New York (1967). E. DeLaVina, Ramseyan Properties and Conjectures of Graffiti, Ph.D. Dissertation, University of Houston (1997). Graphing websites, resources, engines, and internet tools. sample problem only Graph 2 x 3 y cos z e x in three dimensions using any computer software programs, engines, tools, websites, or resources located on a computer or the internet. HARMONIC CELLULAR CONTINUA 168 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 I feel there is another type of mathematics that will be able to produce a unified theory of physics. This new ‘meta-algebraic’ mathematics is not probably based on the horizontal vertical first order predicate calculus that we normally have used to simplify equations but will encompass it. To state ‘horizontal vertical first order predicate calculus’ I mean the usual properties we used to formulate theory such as De Morgan’s laws, laws of exponents ,distributions , integrals, and what is mostly now considered the properties of spaces in modern mathematics. This ‘meta-algebraic’ mathematics is possibly based on properties of circles and sets and geometry. I do not claim these things without reason as I have produced interesting results among which include a revealing situation between algebraic simplification of complex fractions and the Cantor sets. This pointing to a higher geometry for unknown but applicable non typical equations with new and encompassing rules for their meta’-algebraic simplifications. Some laws of the physical universe are not affected by observation and some laws of the universe yield variations based on physical observation. Yo me siento hay otro tipo de las matemáticas que podrán producir una teoría unificada de la física. Este nuevo ‘meta-algebraic’mathematics no es probablemente se basó en el primer cálculo vertical horizontal del predicado de la orden que hemos utilizado normalmente simplificar las ecuaciones pero lo abarcará. Para indicar 'horizontal vertical primero cálculo de predicado de orden' significo las propiedades usuales nosotros formulábamos la teoría tal como De las leyes de Morgan, las leyes de exponentes, las distribuciones, integrante, y lo que en su mayor parte ahora es considerado las propiedades de espacios en matemáticas modernas. Esto matemáticas meta-algebraicos son basadas posiblemente en propiedades de círculos y conjuntos y de la geometría. Yo no reclamo estas cosas sin la razón como yo he producido los resultados 169 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 interesantes entre que incluyen una situación reveladora entre simplificación algebraica de fracciones complejas y los conjuntos de Solista. Este señalar a una geometría más alta para ecuaciones desconocidas pero aplicables no típicas con nuevo y las reglas que abarcan para su meta' -simplificaciones algebraicas. Algunas leyes del universo físico no son afectadas por la observación y algunas leyes de las variaciones del rendimiento del universo se basó en la observación física. Je me sens il y a un autre type de mathématiques qui pourront produire une théorie unifiée de physique. Ce nouveau ‘metaalgebraic’mathematics n'est pas probablement a basé sur le premier calcul de prédicat d'ordre vertical horizontal que nous avons utilisé normalement pour simplifier des équations mais l'entourerons. Pour déclarer ‘le premier calcul de prédicat d'ordre vertical horizontal’ je signifie les propriétés normales que nous avons utilisées formuler la théorie telle que De Morgan’les lois de s, les lois d'exposants, les distributions, intégrales, et ce que maintenant est surtout considéré les propriétés d'espaces dans les mathématiques modernes. Ces mathématiques de ‘meta-algebraic’ sont probablement basées sur les propriétés de cercles et de séries et la géométrie. Je ne réclame pas ces choses sans la raison comme j'ai produit des résultats intéressants parmi qui incluent une situation révélant entre la simplification algébrique de fractions complexes et le Chantre règle. Cet indiquer à une plus haute géométrie pour inconnu mais applicable non les équations typiques avec nouveau règles et les règles entourant pour leurs simplifications meta’-algébriques. Excerpt from [ave] ‘Property and Theory’ A. Zoch t(2000)C . I would like to thank many students for all your valuable questions, friendliness, and graduating. I hope this book will help new students of sciences and mathematics and promote learning. Note: Technology tools, such as calculator and/or computer software, used are campus specific. under revisions s. Zoch copyright t(2004) all rights reserved 170 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 ALGEBRA FOR EVERYBODY Revised t(9/1/2007) Revised t(9/11/2007) Revised t(8/28/2010) COMMENTS OF THE AUTHOR Mathematics and art are connected and can be used to understand many abstract situations and thoughts were other media are insufficient . Diagrams, Graphs, Continua, and Fractals h 171 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 Figure 172 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 173 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 174 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 All Rights reserved by Stephen Zoch t(12/22/04) All national and international copyrights reserved by Stephen Zoch t(12/22/04) Stephen P Zoch U. S. A. Cc arc e2 Sample writing unedited version Topics for great searches or research papers. Topics Science Technology Engineering Mathematics and Accounting Education 1. Women Engineers, Scientist, or Mathematicians 2. Concerning theorems of the computer program Graffiti or the program itself created by Dr.Siemion Fajtlowicz in 1986 3. Graffiti.pc by Dr. Ermalinda DeLaVina 4. HILBERT’S DECISION PROBLEM 5. What is Autosophy? 6. Gödel’s INCOMPLETENESS PROBLEM 7. Turing Test 8. Sapir-Worf Hypothesis 9. Heisenberg’s Uncertainty Principle 10. Does P=NP? 11. Mixed states or phase changes. 12. When is an arbitrarily large natural number prime? 13. Given a random natural number how do we know when it is divisible by seven or any prime number larger than seven in general? 14. STUDY SKILLS, LEARNING METHODS, AND STRATEGY FOR STUDENTS of MATHEMATICS 15. TEST ANXIETY AND MATH PHOBIA 175 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 16. Mathematics learning, education, tutoring, and help 17. UNIFICATION OF THE FORCES IN PHYSICS 18. GENERAL AND SPECIAL RELATIVITY 19. Psychology and Statistics of Mathematics Education in U.S.A. 20. Geometries of Proteins and Enzymes 21. Graphs of Cyber Spaces, Systems, and/or Networks 22. Cardinal and Ordinal Numbers 23. Non Standard Analysis 24. Universal Algebras 25. Mathematics of Ancient Societies and Communities 26. Dimension Theory 27. Ramsey Theory 28. When is a collection of line segments, polygons and/or circles a continuum or fractal? 29. Color Theory and color order systems used in industries (ex. Munsell color system) 30. Nano and/or Micro Technologies 31. Given a circle C of positive radius what is the maximum number of non overlapping circles contained in the interior and/or boundary of C each of a similar fixed radius less than the radius of C? 32. Patents of N. Tesla 33. Encoding and Encryption. 34. Misapplication of formulae concerning economics and finance. 35. Discontinuity of functional rules in economics. 36. Loss or gain due to rounding interest computations. 37. Manipulations of unequal time change interval (daylight savings time) with respect to interest computations. 38. Least Integer Function. 39. relationships between communities and mathematics with respect to technology and Industry 40. Learning Styles 41. relationships between the arts, design and fashion with mathematics and/or sciences Achieving the dream and writing across the curriculum components. Topic 17.-Unification of the Forces in Physics Any equations, laws or formulae which are fundamental to physics have many mathematical implications beyond their known or accepted interpretative meanings and these cannot be discarded in reality as their conditional truth is verified by experimental evidence and the laws and axioms of mathematics exist beyond the realms of physical sciences and computers [1]. What cannot be determined (experimentally) cannot be discarded and most often yields important information concerning the truth. The equation e=mc2 is demonstrated in physics where its variable assignments are given the properties of units of energy and mass with the speed of light held constant. Graphs of the equation e=mc2 in the real Euclidean plane when the freedom of the individual variables is constrained or given representations other than those of standard physics (yet validated by mathematics) have interesting real limits [2]. These limits give insight into the nature of matter and time where relation to the absence of energy or mass or the vectors of electromagnetic radiation are negative and exist. Conservation of energy and mass implies that where there is an absence or deficit of some units of mass or energy equilibrium occurs where the surplus of these units of energy or mass are taken to make up the difference and not necessarily at the same locations. Black holes may be considered as the absence or deficit of energy and mass. Electromagnetic radiation considered as a vector with direction and magnitude exists in lines of force and otherwise it is reasonable to assume that the negative of such vector unit amounts may apply to physical theories as the opposite of a vector is well defined in real analysis. Light has that its speed is not constant near or in a black hole or when transmitted through super cold mediums and only constant in a vacuum. Light is also non linear in its paths due to gravity. Mass and length are not constant at large velocities. Time is altered at large velocities. Perception and interpretation are not confined by all existing physical theories as some of them may be incorrect and they are all relative to human observation. Mathematics used by physicists and if truth is discerned this is certain for all such conditions as the laws of those such as Maxwell, Newton, and Einstein must hold [3] in their cases. Vast areas of mathematics exist not utilized or known to most scientists who are not also mathematicians so that it is incorrect to say the mathematics does not exit to satisfy the unification of the physical forces. The theorems of the great mathematicians Paul Erdos or A. Lelek contain many statements yet unexplored and of interest for scientists who are willing to understand them for example concerning Ramsey theory and dimension theory. 176 UNIVERSITY MATHEMATICS t(1994) S. Zoch c. t( x )2012 It may be determined from existing formulas of physical sciences many statements that seem strange yet are valid mathematically as that which is currently known or understood by men under the empirical process’ determination is not total and can never be complete. Mathematics is the Mother of all sciences and indiscriminant, incorrect or invalid applications and uses of her axioms and/or laws are never sanctioned by any mathematician or computer over all time. Order of operations agreement is held across the world by everyone so that there is well definition in computation for example. Logic is the Father of the sciences’ empirical process and technology its mandates cannot be violated by nature or engineering yet only in human imagination. If the mathematics for some given existing formula of physics yields statements or implications that seem nonsensical to physicists these may not be discarded as they are most likely applicable somehow [4] based on the validity of the instances where the given formula is true and note that nothing is wasted in mathematics as the remainder is given the greatest meaning in the fundamental theorem of Algebra [5] and the freedom of variables taken as axiomatic. Any mathematics or technology used by physicists, financiers, or scientist should never be used incorrectly, irresponsibly, partially or to the detriment of humankind, freedom or life in the future or on the Earth. References [1] Spanier, Edwin H. Algebraic Topology, New York, NY: McGraw-Hill, 1966. [2] Buck, R. C., Advanced Calculus, McGraw-Hill, Inc., U.S.A., 1978. [3] Kramer, Mathematics for Electricity and Electronics, Second Edition, Delmar Thomson Learning: Albany, New York (2002). [4] www. [5] Hungerford, T.W. Algebra , Springer-Verlag New York Inc., New York,1974. [6] Zoch, S., Luminous and Reflective Sets, x, Houston, Texas, USA, 2008, Lumino.doc Excerpt from Negative Light Vectors and the Deficit of Energy and Mass by S Zoch. Comments on Mathematics and Mathematics Education All Rights reserved by Stephen Zoch t(12/22/04) All national and international copyrights reserved by Stephen Zoch t(12/22/04) Stephen Zoch U. S. A. 2/4/2011 10:22 AM Cc arc e2i ww ewioq at 177