Algebra and Trigonometry 10th Edition

Published by Cengage Learning
ISBN 10: 9781337271172
ISBN 13: 978-1-33727-117-2

Chapter 11 - 11.1 - Sequences and Series - 11.1 Exercises - Page 777: 43



Work Step by Step

The signs are alternating (starts with negative). The numerator starts at $2$ and increases by $1$ at each term, and the denominator starts at $3$ and increases by $1$ at each term. Thus a general term is $a_n=(-1)^n\frac{n+1}{n+2}$
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