Calculus: Early Transcendentals (2nd Edition)

Published by Pearson
ISBN 10: 0321947347
ISBN 13: 978-0-32194-734-5

Chapter 8 - Sequences and Infinite Series - 8.1 An Overview - 8.1 Exercises - Page 606: 59


First four terms: $0.3, 0.03, 0.003, 0.0003$ Sum: $S_\infty = \frac{1}{3}$.

Work Step by Step

The next term is the previous term multiplied by a factor of $0.1$. The infinite series is a geometric series, with a common ratio $r$ of $0.1$, which is less than $1$. Given an initial term of $a_0$ and common ratio $r$, we can find the sum by $S_\infty = \frac{a_0}{1-r}$. $S_\infty = \frac{0.3}{1-0.1} = \frac{1}{3}$.
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