The diagram shows the curve $y=\mathrm{f}(x)$. The curve has an asymptote $y=0$ and a maximum point at $(2,3)$. It is given that $f$ is concave downwards for $1 \leq x \leq 3$.
Sketch the graph of $y=\mathrm{f}^{\prime}(x)$, stating the equations of any asymptotes, the $x$-coordinates of any stationary points and any points of intersection with the $x$-axis.

[3]