1 setxyrapport
25 setxunit
7.5 setborder
90 setangle_repere
-1 1 setxrange
-1 1 setyrange
1 1 settkstep
.5 .5 setsubtkstep
0.5 0.5 setmkstep
ticks
subticks
marks
traceaxes
axesarrow
unites
/f {setxvar
#rpn# sqrt(x^2+y^2)
} def
/g {setxvar
#rpn# -sqrt(x^2+y^2)
} def
gsave
bleu
.75 setlinewidth
continu
{f} courbe
grestore
gsave
rouge
.75 setlinewidth
mixte
xmin .01 neg {g} Courbe
.01 xmax {g} Courbe
grestore
|