25 setxunit
7.5 setborder
90 setangle_repere
-500 500 setxrange
-1000 1000 setyrange
1 1 settkstep
.5 .5 setsubtkstep
2 2 setmkstep
ticks
subticks
marks
traceaxes
axesarrow
unites
/f {setxvar
#rpn# -x*sin(sqrt(abs(x)))-y*sin(sqrt(y))
} def
gsave
bleu
.75 setlinewidth
continu
xmin .500 neg {f} Courbe
.500 xmax {f} Courbe
grestore
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