A) 3
B) ? 3
C) 0
D) Does not exist
Correct Answer: B
Solution :
\[f(x)=3|2+x|\]; \[{f}'(x)=-3\] , \[\left[ \because \,|x|=\left\{ \begin{matrix} -x,\,x<0 \\ x,\,x>0 \\ \end{matrix} \right. \right]\].You need to login to perform this action.
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