verbatimtex
%&latex
\documentclass[11pt]{article}
\usepackage{fourier}
\usepackage{amsmath}
\begin{document}
etex

input mp-solid

invnormalelum:=-1;

figureespace(-10u,-10u,10u,10u);
Initialisation(300,70,30,10);
incolor:=0.5[jaune,white];
arcenciel:=true;
draw SurfZ("if (X=0) and (Y=0):10 else:10*sin((X++Y))/(X++Y) fi",-8,8,-8,8,60,150);%60,120
label(btex $f(z)=10\times\dfrac{\sin\left(\sqrt{x^2+y^2}\right)}{\sqrt{x^2+y^2}}\mbox{ avec }\left\{\begin{array}{l}
  x\in[-8,8]\\
  y\in[-8,8]\\
  \end{array}
  \right.$ etex,u*(0,-3.5));
finespace;
end