Calculus 10th Edition

Published by Brooks Cole
ISBN 10: 1-28505-709-0
ISBN 13: 978-1-28505-709-5

Chapter 9 - Infinite Series - Review Exercises - Page 677: 38

Answer

Converges

Work Step by Step

The sum of a geometric series can be found as: $S_n=\dfrac{a_1}{1-r}$ where, $a_1$ denotes the first term and the $r$ is common ratio. We are given that $\Sigma_{n=0}^{\infty} (0.36)^n$ This can be further written as: $\Sigma_{n=0}^{\infty} (0.36)^n=0.36+(0.36)^2+(0.36)^3+.......$ So, we have $a_1=0.36$ and $r=0.36$ Thus, we can see that $|r|=0.36 \lt 1$. This means that the given series converges.
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