Find the indicated derivative.
-Find $y ^ { \prime \prime }$ if $y = - 7 \cos x$.
A) $y ^ { \prime \prime } = 7 \sin x$
B) $y ^ { \prime \prime } = - 7 \cos x$
C) $y ^ { \prime \prime } = - 7 \sin x$
D) $\mathrm { y } ^ { \prime \prime } = 7 \cos \mathrm { x }$

Question

Quizplus · Accepted Answer

The first derivative of $y = -7 \cos x$ is $y' = 7 \sin x$. The second derivative is $y'' = 7 \cos x$.

Find the Indicated Derivative y′′y ^ { \prime \prime }y′′ If y=−7cos⁡xy = - 7 \cos xy=−7cosx

Find the Indicated Derivative $y ^ { \prime \prime }$ If $y = - 7 \cos x$