25 setxunit
7.5 setborder
90 setangle_repere
-20 20 setxrange
-20 10 setyrange
1 1 settkstep
.5 .5 setsubtkstep
2 2 setmkstep
ticks
subticks
marks
traceaxes
axesarrow
.75 setlinewidth
continu
bleu
/X {settvar
#rpn# 6*t+2*t^3
} def
/Y {settvar
#rpn# 3*t*t+3*(1-t^4)/2
} def
10 neg 10 {X} {Y} Courbeparam
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