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How do I find the derivative of cos^2(x)
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use the chain rule. that function is the composition of cos(x) and x^2
thank you
\[y=\cos^2x\] \[y'=2(cosx)^1\] \[y'=2cosx\]
-1 fan for corec
\[y′=2(cosx)1(cosx)'\] \[y′=2 cosx sinx\]
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-2 (both fans for corec and the constant in front of his answer)
right =) y' = -2 cosx sinx lol
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