f = u^3, so
f' = 3u^2 u' = 3sin^2(4x) cos(4x) (4)
= 12 sin^2(4x) cos(4x)
Find f'(x) if f(x)=sin^3(4x)
A. 4cos^3(4x)
B. 3sin^2(4x)cos(4x)
C. cos^3(4x)
D. 12sin^2(4x)cos(4x)
E. None of these
I got D using the chain rule?
1 answer