Calculus with Applications (10th Edition)

Published by Pearson
ISBN 10: 0321749006
ISBN 13: 978-0-32174-900-0

Chapter 8 - Further Techniques and Applications of Integration - Chapter Review - Review Exercises - Page 455: 4

Answer

The statement is True.

Work Step by Step

$$ \int \ln (4x) dx $$ Integration by parts should be used to determine this integral as follows: Let $u=\ln (4x)$ and $dv =dx$, so that: $$ \begin{aligned} \int \ln (4x) dx &= \int \ln (4x) dx \\ &\quad \left[\begin{array}{c}{u=\ln (4x) , \quad\quad dv= dx} \\ {d u= \frac{4dx}{4x} , \quad\quad v=x }\end{array}\right] , \text { then }\\ &= x \ln (4x) -\int x . \frac{4dx}{4x}\\ &= x \ln (4x) -\int dx\\ &= x \ln (4x) -x.\\ \end{aligned} $$ Therefore The statement is True.
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