100 setxunit
7.5 setborder
90 setangle_repere
-2 2 setxrange
-4 4 setyrange
1 1 settkstep
.5 .5 setsubtkstep
1 2 setmkstep
ticks
subticks
marks
traceaxes
axesarrow
unites
/f {setxvar
#rpn# x*sqrt(1+x^2)
} def
/g {setxvar
#rpn# x
} def
gsave
bleu
2 setlinewidth
continu
{f} courbe
grestore
gsave
bleu
continu
/hstep 4 store
/hangle 15 store
0 1 {f} Hachcourbe
grestore
2.8 settailletangente
0 {f} tangente
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