Calculus (3rd Edition)

Published by W. H. Freeman
ISBN 10: 1464125260
ISBN 13: 978-1-46412-526-3

Chapter 8 - Techniques of Integration - 8.1 Integration by Parts - Preliminary Questions - Page 395: 3

Answer

This is a poor integration by parts choice.

Work Step by Step

This is a very bad choice, because it will yield the integration $\int x^2 \cos xdx $ which is more complicated than the original one.
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