Posted by **stacy** on Tuesday, February 28, 2012 at 9:29pm.

i don't know how to start this problem. i don't like cos and sin. im so confuse.

1.f(x)=sin(sin(x)), find f'(x)

2.f(x)= 4sin^4x, find f'(x). this problem i couldn't find it in my math book. i never see it before. because of sin exponent 4 -->sin^4

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