Calculus with Applications (10th Edition)

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

Chapter 4 - Calculating the Derivative - Chapter Review - Review Exercises - Page 244: 10

Answer

${\text{False}}$

Work Step by Step

$$\eqalign{ & {\text{Let }}f\left( x \right) = \log x{\text{ and }}g\left( x \right) = \ln x \cr & {\text{Differentiating}} \cr & f'\left( x \right) = \frac{d}{{dx}}\left[ {\log x} \right] \cr & f'\left( x \right) = \frac{1}{{x\left( {\ln 10} \right)}}\frac{d}{{dx}}\left[ x \right] \cr & f'\left( x \right) = \frac{1}{{x\left( {\ln 10} \right)}} \cr & and \cr & g'\left( x \right) = \frac{d}{{dx}}\left[ {\ln x} \right] \cr & g'\left( x \right) = \frac{1}{x} \cr & \frac{1}{{x\left( {\ln 10} \right)}} \ne \frac{1}{x} \cr & {\text{The derivatives are not equal, the statement is False}} \cr} $$
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