   Chapter 13.CR, Problem 55E ### Algebra and Trigonometry (MindTap ...

4th Edition
James Stewart + 2 others
ISBN: 9781305071742

#### Solutions

Chapter
Section ### Algebra and Trigonometry (MindTap ...

4th Edition
James Stewart + 2 others
ISBN: 9781305071742
Textbook Problem

# 5 5 - 6 0 Infinite Geometric Series Determine whether the infinite geometric series is convergent or divergent. If it is convergent, find its sum. 1 − 2 5 + 4 25 − 8 125 + ⋅ ⋅ ⋅

To determine

Whether the infinite geometric series 125+4258125+ is convergent or divergent. Find the sum if convergent.

Explanation

Given:

The expression is given as,

125+4258125+

Approach:

Check if the absolute value of the common ratio is smaller than 1.

If convergent use the formula for sum of an infinite series.

Calculation:

The common ratio is,

r=2/51=25

|r|=25<1

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