input courbescp13;
beginfig(1);
  cadre((0,0),(9,7));
  origine((1,0.5));
  unites(4,2);
  draw millimetrepourcourbe withcolor gris;
  draw axes;
  graduationx(btex 1 etex,1);
  graduationy(btex 10 etex,1);
  legendex(btex $I$ (en A) etex);
  legendey(btex $U$ (en V) etex);
endfig;
end