Présentation de 2521.jps

25 setxunit
7.5 setborder
90 setangle_repere
-5 5 setxrange
-5 5 setyrange
/quadrillagegray 0.4 def
1 setquadrillagexstep
1 setquadrillageystep
quadrillage
1 1 settkstep
.5 .5 setsubtkstep
2 2 setmkstep
ticks
subticks
marks
traceaxes
axesarrow
.75 setlinewidth
continu
bleu
/X {settvar
#rpn#   2*t-(1÷t^2)
} def
/Y {settvar
#rpn#   2*t+t^2
} def
-4 4 {X} {Y} Courbeparam