Sec 11.3 Geometric Sequences and Series
... Plug 1 in for k and you will get a = -14/3. Then plug in a and r into the sum formula. ...
... Plug 1 in for k and you will get a = -14/3. Then plug in a and r into the sum formula. ...
6.5 Solving Systems by Inspection
... In essence, we follow these steps if the equations are not in slope-intercept form: 1) Make sure both equations are in standard form and check if the ratio of the coefficients are equal a. If the ratios are not equal, there is a single solution, and you need to solve. b. If the ratios are equal, the ...
... In essence, we follow these steps if the equations are not in slope-intercept form: 1) Make sure both equations are in standard form and check if the ratio of the coefficients are equal a. If the ratios are not equal, there is a single solution, and you need to solve. b. If the ratios are equal, the ...
Infinity
Infinity (symbol: ∞) is an abstract concept describing something without any limit and is relevant in a number of fields, predominantly mathematics and physics.In mathematics, ""infinity"" is often treated as if it were a number (i.e., it counts or measures things: ""an infinite number of terms"") but it is not the same sort of number as natural or real numbers. In number systems incorporating infinitesimals, the reciprocal of an infinitesimal is an infinite number, i.e., a number greater than any real number; see 1/∞.Georg Cantor formalized many ideas related to infinity and infinite sets during the late 19th and early 20th centuries. In the theory he developed, there are infinite sets of different sizes (called cardinalities). For example, the set of integers is countably infinite, while the infinite set of real numbers is uncountable.