Thomas' Calculus 13th Edition

Published by Pearson
ISBN 10: 0-32187-896-5
ISBN 13: 978-0-32187-896-0

Chapter 10: Infinite Sequences and Series - Section 10.3 - The Integral Test - Exercises 10.3 - Page 587: 51

Answer

$n \gt 10^{60}$

Work Step by Step

Consider $\int_n^\infty \dfrac{1}{x^{(1.1)}}dx \lt 0.00001$ and $ \lim\limits_{k \to \infty} [\dfrac{(-10)}{k^{(0.1)}}+\dfrac{(10)}{n^{(0.1)}} ]\lt 0.00001$ Thus, $\dfrac{10}{n^{(0.1)}} \lt 0.00001 \implies n \gt (10^6)^{10}$ Therefore, $n \gt 10^{60}$
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