Calculus: Early Transcendentals (2nd Edition)

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

Chapter 8 - Sequences and Infinite Series - 8.4 The Divergence and Integral Tests - 8.4 Exercises - Page 638: 31

Answer

\[\text{The series converges}\]

Work Step by Step

\[\begin{align} & \sum\limits_{k=3}^{\infty }{\frac{1}{{{\left( k-2 \right)}^{4}}}}=\frac{1}{{{1}^{4}}}+\frac{1}{{{2}^{4}}}+\frac{1}{{{3}^{4}}}+\frac{1}{{{4}^{4}}}+\cdots \\ & \text{We can write the series as} \\ & \sum\limits_{k=1}^{\infty }{\frac{1}{{{k}^{4}}}} \\ & \text{Using the p-series test }\left( \text{Theorem 8}\text{.11}\text{, page 632} \right) \\ & \text{The }p\text{-series }\sum\limits_{k=1}^{\infty }{\frac{1}{{{k}^{p}}}\text{ converges for }p>1\text{ and diverges for }p\le 1} \\ & \text{Comparing} \\ & \underbrace{\sum\limits_{k=1}^{\infty }{\frac{1}{{{k}^{4}}}}}_{\sum\limits_{k=1}^{\infty }{\frac{1}{{{k}^{p}}}}}\Rightarrow p=4 \\ & p>1,\text{ then the series converges} \\ \end{align}\]
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.