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How do you find the derivative of #cos^2(x^3)#?

1 Answer

Aug 28, 2015

#f'(x)=-6x^(2).cos(x^(3)).sin(x^(3))#

Explanation:

#f(x)=cos^2(x^3)#

Apply the chain rule:

#f'(x)=-2cos(x^3).sin(x^3).3x^2#

#f'(x)=-6x^(2).cos(x^3).sin(x^3)#

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