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AP® Calculus AB-BC

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The Quotient Rule: $\cfrac{\sin { ( x ) }}{x}$

APCALC-OEHLM1

If $y=\cfrac{\sin { ( x ) }}{x}$, then $ \cfrac { dy }{ dx } =$

A

$\cfrac { x\cos { x-\sin { x } } }{ 2x } $

B

$\cfrac { x\cos { x+\sin { x } } }{ { x }^{ 2 } } $

C

$\cfrac { \sin { x-x\cos { x } } }{ { x }^{ 2 } } $

D

$\cfrac { x\cos { x-\sin { x } } }{ { x }^{ 2 } } $