Présentation de 482.jps

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