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 Find the derivative of the function f(x)=−4x2−4cos⁡(x). \text { Find the derivative of the function } f ( x ) = - 4 x ^ { 2 } - 4 \cos ( x ) \text {. }

Question 101

Multiple Choice

 Find the derivative of the function f(x) =−4x2−4cos⁡(x) . \text { Find the derivative of the function } f ( x ) = - 4 x ^ { 2 } - 4 \cos ( x ) \text {. }


A) ft(x) =−4x+4sin⁡(x) f ^ { t } ( x ) = - 4 x + 4 \sin ( x )
B) ft(x) =−8x+4sin⁡(x) f ^ {t } ( x ) = - 8 x + 4 \sin ( x )
C) ft(x) =−8x+4cos⁡(x) f ^ { t } ( x ) = - 8 x + 4 \cos ( x )
D) ft(x) =−8x−4sin⁡(x) f ^ { t} ( x ) = - 8 x - 4 \sin ( x )
E) ft(x) =−8x−4cos⁡(x) f ^ { t } ( x ) = - 8 x - 4 \cos ( x )

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