• Study Resource
  • Explore Categories
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
Dec 2000
Dec 2000

PDF
PDF

... So in 3 steps we get a palindrome, hence 983 is not a Lychrel number. In fact, it is not known if there exist any Lychrel numbers in base 10 (numbers colloquially called “Lychrel numbers” in base 10 are in fact just Lychrel candidates). However, in base 2 for example, there have been numbers proven ...
Review for Quiz
Review for Quiz

...  Know prime and composite definitions. They should be in your spiral. Be able to tell whether a number is prime or composite. Use your sieve for 1-100. Examples 43 is prime because its only factors are 1 and 43 70 is composite because 1, 2, 5, 7, 10, 14, 35, 70 are all factors…it has more than 2 fa ...
document
document

... We must guess between .6 & .7 We record 1.67 cm as our measurement The last digit an 7 was our guess...stop there ...
Math/CS 466/666 Lecture 06 The Quadratic Equation Made Difficult
Math/CS 466/666 Lecture 06 The Quadratic Equation Made Difficult

absolute value a number`s distance from zero on a number line
absolute value a number`s distance from zero on a number line

... algorithm A set of step-by-step instructions for completing a task that can be generalized to other tasks, problems, or situations Order of Operations Making a peanut butter and jelly sandwich ...
Pure Mathematics
Pure Mathematics

... Do not use staples, paper clips, glue or correction fluid. DO NOT WRITE IN ANY BARCODES. Answer all the questions. Give non-exact numerical answers correct to 3 significant figures, or 1 decimal place in the case of angles in degrees, unless a different level of accuracy is specified in the question ...
4A Strategy: List the single-digit primes. The single
4A Strategy: List the single-digit primes. The single

In = ∫ dx - Tulane-Math
In = ∫ dx - Tulane-Math

... The peeling method consists of using Mathematica to obtain data for In and use it to guess a formula for In . The first few values of In contains a factor of π, so it seems a good idea to define ...
A Method for 4x4 Digit Mental Multiplications
A Method for 4x4 Digit Mental Multiplications

1st AIME - Art of Problem Solving
1st AIME - Art of Problem Solving

The 1997 AHSME
The 1997 AHSME

www.XtremePapers.com - Past Papers Of Home
www.XtremePapers.com - Past Papers Of Home

... Write your Centre number, candidate number and name on all the work you hand in. Write in dark blue or black pen on both sides of the paper. You may use a soft pencil for any diagrams or graphs. Do not use staples, paper clips, highlighters, glue or correction fluid. Answer all the questions. Give n ...
Elementary Number Theory
Elementary Number Theory

Rational Number
Rational Number

KVS JMO 2 - Home works and Assignments Online
KVS JMO 2 - Home works and Assignments Online

... 3 persons A, B and C with help of a monkey collected many cocoanuts, got tired and fell asleep. At night A woke up and decided to have his shares. He divided cocoanuts into 3 equal shares giving the left out single cocoanut to monkey for it’s hard labour and fell aleep again. In the same way in orde ...
Chemistry You Need to Know
Chemistry You Need to Know

Conversion Between Decimal and Binary Representations
Conversion Between Decimal and Binary Representations

... The conversion of a binary number to decimal can be done in two ways: Method 1: Multiply each binary number by its position-value, and add the results together. The rightmost bit has a position value 1, the next 2, the value at the third position is 4, fourth 8 and so on (See figure below) ...
Numbers, Minders and Keepers
Numbers, Minders and Keepers

... There is still a 1-1 matching between the numbers in the two rows – so there are as many even positive integers as positive integers altogether. (The finite mind struggles with this idea) ...
Chemistry You Need to Know
Chemistry You Need to Know

Introduction to Computer Science
Introduction to Computer Science

Introduction into trigonometry
Introduction into trigonometry

... Hipparchus Compiled a trigonometric table for solving triangles. Today we have all the values saved on computers : The calculator! ...
2012 exam and solutions
2012 exam and solutions

SigFigs_06feb10_mini
SigFigs_06feb10_mini

... • Accuracy is the degree of conformity of a measured or calculated quantity to its actual (true) value. • Precision, also called reproducibility or repeatability, is the degree to which further measurements or calculations show the same or similar results. • A measurement can be accurate but not pre ...
Number Sense Notes
Number Sense Notes

... number to both addends. The number 0 cannot be an addend. Subtraction: What minus what gives me 36?  Add any number to 36. The sum becomes the minuend (1st number); the number you added becomes the subtrahend (2nd number). Add ALL the zeroes in the given number to both the minuend and the subtrahen ...
< 1 ... 201 202 203 204 205 206 207 208 209 ... 231 >

Approximations of π



Approximations for the mathematical constant pi (π) in the history of mathematics reached an accuracy within 0.04% of the true value before the beginning of the Common Era (Archimedes). In Chinese mathematics, this was improved to approximations correct to what corresponds to about seven decimal digits by the 5th century.Further progress was made only from the 15th century (Jamshīd al-Kāshī), and early modern mathematicians reached an accuracy of 35 digits by the 18th century (Ludolph van Ceulen), and 126 digits by the 19th century (Jurij Vega), surpassing the accuracy required for any conceivable application outside of pure mathematics.The record of manual approximation of π is held by William Shanks, who calculated 527 digits correctly in the years preceding 1873. Since the mid 20th century, approximation of π has been the task of electronic digital computers; the current record (as of May 2015) is at 13.3 trillion digits, calculated in October 2014.
  • studyres.com © 2026
  • DMCA
  • Privacy
  • Terms
  • Report