Présentation de 329.jps

25 setxunit
7.5 setborder
90 setangle_repere
-3 3 setxrange
-3 3 setyrange
/quadrillagegray 0.4 def
1 setquadrillagexstep
1 setquadrillageystep
quadrillage
1 1 settkstep
.5 .5 setsubtkstep
2 2 setmkstep
ticks
subticks
marks
traceaxes
axesarrow
unites
/f {setxvar
#rpn#   (x)^3 +3*x
} def
gsave
   bleu
   .75 setlinewidth
   pointilles
   {f} courbe
grestore
gsave
   bleu
   continu
   /hstep 4 store
   /hangle 15 store
 2 3  {pop ymax 1 add} {f} Hachcourbes
grestore
gsave
   orange
   continu
   /hstep 6 store
   /hangle 45 store
   {f} {g} hachcourbes
grestore
gsave
   gris
   continu
   /hstep 4 store
   /hangle -45 store
   {pop ymin 1 sub} {g} hachcourbes
grestore
2.8 settailletangente
-2 {f} tangente
 -1 {f} tangente
 0 {f} tangente
2 {f} tangente