Calculus (3rd Edition)

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

Chapter 3 - Differentiation - 3.7 The Chain Rule - Exercises - Page 147: 87



Work Step by Step

According to the chain rule, $\frac{d}{dx}(f(g(x)))=f'(g(x))\times g'(x)$ When $x=6$, $\frac{d}{dx}(f(g(x)))=f'(g(6))\times g'(6)$ $=f'(6)\times3=4\times3=12$
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