%% auteur : Florent BRAISAZ

16 setfontsize
0 3 setorigine
0.2 setxyrapport
56.91 setxunit
7.5 setborder
90 setangle_repere
-0.75 7 setxrange
2.9 5.1 setyrange
[0.5 0.1 .25 .05 .05 .01] {orange} Quadrillage
1 1 settkstep
.5 .5 setsubtkstep
1 1 setmkstep
ticks
subticks
marks
traceaxes
axesarrow

/f {setxvar
#rpn#   6-9/(x+2)
} def
/g {setxvar
#rpn#   21/(5+Exp(-0.8*x))
} def
gsave
   bleu
   .75 setlinewidth
   continu
 1 6  {f} Courbe

 1 3 point
 2 3.75 point
 3 4.2 point
 4 4.5 point
 5 4.714 point
 6 4.875 point

#latex#${\mathcal{C}_f}$
5.5 4.95 [2 2] crtexlabel

grestore

gsave
   rouge
   .75 setlinewidth
   continu
 1 6  {g} Courbe

 1 3.8537 point
 2 4.037 point
 3 4.1252 point
 4 4.166 point
 5 4.1847 point
 6 4.1931 point

 3.512 4.15 dashpoint

 (3,51) 3.51 3 dctext


 (4,15) 0 4.15 cltext

#latex#${\mathcal{C}_g}$
5.5 4.25 [2 2] crtexlabel

grestore
gsave

     vert

2.761 4.1097 dashpoint

(2,76) 2.761 3 dltext

grestore