Answer
For the function $cos^4(x)$:
Inner Function: $cos(x)$
Outer Function: $u^4$
Work Step by Step
With $y=f(u)$ and $u=g(x)$ to express $f(g(x))$, we can set $y=u^4$ and $u=cos(x)$ to get $cos^4(x)$
Calculus: Early Transcendentals (2nd Edition)
by Briggs, Bill L.; Cochran, Lyle; Gillett, Bernard
Published by
Pearson
ISBN 10:
0321947347
ISBN 13:
978-0-32194-734-5
Chapter 3 - Derivatives - 3.7 The Chain Rule - 3.7 Exercises - Page 191: 4
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