If $f(x)=6 \cos x+\sin ^{2} x$ , find $f^{\prime}(x)$ and $f^{\prime \prime}(x)$ .
A) $f^{\prime \prime}(x)=-6 \cos (2 x)+2 \cos (x)$
B) $f^{\prime}(x)=-6 \sin (x)+\sin (2 x)$
C) $f^{\prime}(x)=-6 \sin (2 x)+\sin (x)$
D) $f^{\prime \prime}(x)=-6 \cos (x)+2 \cos (2 x)$
E) $f^{\prime \prime}(x)=-2 \cos (2 x)+6 \cos (x)$

Question

If $f(x)=6 \cos x+\sin ^{2} x$ , find $f^{\prime}(x)$ and $f^{\prime \prime}(x)$ . 
A) $f^{\prime \prime}(x)=-6 \cos (2 x)+2 \cos (x)$ 
B) $f^{\prime}(x)=-6 \sin (x)+\sin (2 x)$ 
C) $f^{\prime}(x)=-6 \sin (2 x)+\sin (x)$ 
D) $f^{\prime \prime}(x)=-6 \cos (x)+2 \cos (2 x)$ 
E) $f^{\prime \prime}(x)=-2 \cos (2 x)+6 \cos (x)$

Quizplus · Accepted Answer

The Answer of If $f(x)=6 \cos x+\sin ^{2} x$ , find $f^{\prime}(x)$ and $f^{\prime \prime}(x)$ . 
A) $f^{\prime \prime}(x)=-6 \cos (2 x)+2 \cos (x)$ 
B) $f^{\prime}(x)=-6 \sin (x)+\sin (2 x)$ 
C) $f^{\prime}(x)=-6 \sin (2 x)+\sin (x)$ 
D) $f^{\prime \prime}(x)=-6 \cos (x)+2 \cos (2 x)$ 
E) $f^{\prime \prime}(x)=-2 \cos (2 x)+6 \cos (x)$

If f(x)=6cos⁡x+sin⁡2xf(x)=6 \cos x+\sin ^{2} xf(x)=6cosx+sin2x , Find f′(x)f^{\prime}(x)f′(x) And f′′(x)f^{\prime \prime}(x)f′′(x) A)

If $f(x)=6 \cos x+\sin ^{2} x$ , Find $f^{\prime}(x)$ And $f^{\prime \prime}(x)$
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