Question:
Let $f: R \rightarrow R$ be defined by $f(x)=\left\{\begin{array}{lll}k-2 x, & \text { if } & x \leq-1 \\ 2 x+3, & \text { if } & x>-1\end{array}\right.$
If $\mathrm{f}$ has a local minimum at $x=-1$, then a possible value of $\mathrm{k}$ is :
Correct Option: , 4
Solution:
