%% auteur :
-2 2 setxrange
-3 3 setyrange
/f0 {setxvar
#rpn# x^3
} def
70 setxunit
[1 1 .5 .5 .1 .1] {orange} Quadrillage
.7 setlinewidth
tracerepere
marks
$$
y = -x^3
$$
/dx_boxit 2 def
/dy_boxit 2 def
/fillstyle {jaune fill} def
/linearc .05 def
boxit
-1 2 [2 dup] cctexlabel
$$
y = a x^3 \, ; a<0
$$
1 -2 [2 dup] cctexlabel
1.5 setlinewidth
gsave
bleu
{f0} courbe
grestore
setTimesItalic
(C) Xmax dup f0 ultext
(f) indice
(O) O drtext