Chapter 4.5, Problem 218E

For the following exercises, draw a graph that satisfies the given specifications for the domain $x=\left[-3,3\right]$ . The function does not have to be continuous or differentiable.

218. $f"\left(x\right)<0$ over $-1<x<1,f"\left(x\right)>0,-3<x<-1,1<x<3$ , local maximum at x = 0, local maximum at $x=\pm 2$