AP Calculus ABeasymcq1 pt

If f(x)=cosxf(x)=\cos x, then f(x)=f'(x)=

A.cosx\cos x
B.sinx\sin x
C.cosx-\cos x
D.sinx-\sin x

Explanation

Core Concept

The derivative of cosx\cos x is sinx-\sin x. Do not drop the minus sign.

Correct Answer

Dsinx-\sin x

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