prologues:=2;

verbatimtex
%&latex
\documentclass[12pt]{article}
\usepackage{fourier}
\begin{document}
etex

input mp-solid

invnormalelum:=-1;

figureespace(-10u,-10u,10u,10u);
Initialisation(300,15,35.264,10);
incolor:=0.5[green,white];
outcolor:=0.25[orange,white];
draw SurfZ("4*cos(X++Y)*mexp(-(X++Y)*50)",-15,15,-10,10,60,150);%60,120
label(btex $f(z)=4\cos\left(\sqrt{x^2+y^2}\right)\textrm{e}^{-50\sqrt{x^2+y^2}}\mbox{ avec }\left\{\begin{array}{l}
  x\in[-15,15]\\
  y\in[-10,10]\\
  \end{array}
  \right.$ etex,u*(0,-5));
finespace;
end