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Single Variable Calculus

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Difficult

Differentiation of Cosine Function

SVCALC-UJFLVR

Find the derivative of $f(x)=\cos(x)$ using the limit approach.

A

$-\sin(x)$

B

$\sin(x)$

C

$\cos(x)-\sin(x)$

D

$-\cos(x)$