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What is the derivative of $cos (x - 1)$ $cos(x-1)$ ?

1 Answer

Nov 21, 2016

-sin (x-1)

Explanation:

$\frac{d}{d x} cos (x - 1) = - sin (x - 1) \frac{d}{d x} (x - 1) = - sin (x - 1)$ $d/dx cos (x-1) = - sin (x-1) d/dx (x-1) = -sin (x-1)$

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