SOLUTION: Derivative of cos^3

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Question 732387: Derivative of cos^3
Answer by Alan3354(69443) About Me  (Show Source):
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Derivative of cos^3
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If you mean cos^3(x):
f(x) = cos^3(x)
f'(x) = 3cos^2(x)*(-sin(x))
= -3sin(x)cos^2(x)