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Practice: differentiation

Calculus Level 1

Let $f(x)=\cos^2x+\sin^2x$ , find $f'(x)$ .

4\cos x+2\cos^2x\sin^2x+4\sin x

1

0

\cos^2(\sin^2x)

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by حكيم الفيلسوف الضائع

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