Mathematics, 29.01.2020 19:02, claudia122752

How to find the derivative of cos^2x? i seem to be confused.
i was told to use the chain rule, but i don't see how it can apply.
can't i just substitute (cos x)(cos x) in its place and then use the product rule? isn't cos^2 x = (cos x)(cos x)?
let me know if i am right. if not, then explain how to use the chain rule ; how are you getting: ?

Answers: 2

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How to find the derivative of cos^2x? i seem to be confused.
i was told to use the chain rule...