40 setxunit
7.5 setborder
90 setangle_repere
-5 5 setxrange
-4 7 setyrange
/quadrillagegray 0.4 def
1 setquadrillagexstep
1 setquadrillageystep
quadrillage
1 1 settkstep
.5 .5 setsubtkstep
2 2 setmkstep
ticks
subticks
marks
traceaxes
axesarrow
unites
/f {setxvar
#rpn# x^2
} def
/g {setxvar
#rpn# 1/x
} def
/h {setxvar
#rpn# 1/x^2
} def
gsave
bleu
.75 setlinewidth
continu
{f} courbe
grestore
gsave
rouge
.75 setlinewidth
continu
xmin .01 neg {g} Courbe
.01 xmax {g} Courbe
grestore
gsave
vert
.75 setlinewidth
continu
{h} courbe
grestore
rouge
<tex>
$y={1\over x}$
</tex>
-4 -3 [1.5 1.5] urtexlabel
bleu
<tex>
$y=x^2$
</tex>
3 6 [1.5 1.5] drtexlabel
vert
<tex>
$y={1\over x^2}$
</tex>
-4 2 [1.5 1.5] drtexlabel
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