Chapter 2.2, Problem 11E

In Exercises $7-12$, sketch the graph of a function that has the properties described.

$(0,6)$, $(2,3)$ and $(4,0)$ are on the graph; $f\text{'}(0)=0$ and $f\text{'}(4)=0$; $f\text{'}\text{'}(x)<0$ for $x<2$, $f\text{'}\text{'}(2)=0$, $f\text{'}\text{'}(x)>0$ for $x>2$.