Présentation de 938.jps

25 setxunit
7.5 setborder
90 setangle_repere
  setxrange
  setyrange
1 1 settkstep
.5 .5 setsubtkstep
2 2 setmkstep
ticks
subticks
marks
traceaxes
axesarrow
.75 setlinewidth
continu
bleu
/X {settvar
#rpn#   2*Cos (t)+Cos (2*t)
} def
/Y {settvar
#rpn#   2*Sin(t)- Sin (2*t)
} def
 Erreur lexicale !0;pi/2
_^
 Erreur lexicale !0;pi/2
_^
  {X} {Y} Courbeparam