Answer
-0.688172
Work Step by Step
We evaluate using a calculator:
$\sum_{n=1}^{100}\frac{(-1)^n}{n}=\frac{(-1)^1}{1}+\frac{(-1)^2}{2}+...+\frac{(-1)^{100}}{100}=-0.688172$
College Algebra 7th Edition
by Stewart, James; Redlin, Lothar; Watson, Saleem
Published by
Brooks Cole
ISBN 10:
1305115546
ISBN 13:
978-1-30511-554-5
Chapter 8, Sequences and Series - Section 8.1 - Sequences and Summation Notation - 8.1 Exercises - Page 601: 60
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