8.1.3 Cartesian



  \begin{texgraph}[name=Cartesienne,export=pgf]
  view(-2,2,-0.1,2),Marges(0.5,0.5,0.5,0.5),
  size(7.5), tMin:=-2, tMax:=2,
  Color:=darkgray, Width:=8,
  LineStyle:=dotted, Grille(0,0.5*(1+i)),
  Color:=black, LineStyle:=solid,Axes(0,1+i,1),
  NbPoints:=100, Width:=8, Color:=darkseagreen,
  Cartesienne(x*Ent(1/x),5,1)
  \end{texgraph}

 PIC



Curve and discontinuity