Finite Mathematics Quiz
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FOUNDATIONS OF FINITE MATHEMATICS
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The sum SS of an infinite geometric series with first term a1a_1 and common ratio rr (where ∣r∣<1|r| < 1) is given by the formula S=a11−rS = \frac{a_1}{1-r}. Which of the following correctly expresses the common ratio rr in terms of SS and a1a_1?
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