-2.2 2.5 setxrange
-2.2 2.5 setyrange
%-2.2 2.2 setxrange
%-2.2 2.2 setyrange
50 setxunit
2 setymkstep
quadrillage
tracerepere
marks
1.2 setlinewidth
-2 2 {dup dup mul 3 sub mul} (*-*) Courbe
setTimesItalic
(x) xmax 0 (3 0) dltext
(y) 0 ymax drtext
$\vec \imath $
.5 0 [1.2 dup] dctexlabel
$\vec \jmath $
0 .5 [1.2 dup] cltexlabel