8.1.8 EquaDif



  \begin{texgraph}[name=EquaDif,export=pgf]
  view(-10.5,2.5,-1.5,4.5),Marges(0,0,0,0),
  size(7.5,0), Arrows:=1, Width:=4,
  Axes(0,1+i), Arrows:=0,
  LabelAxe(y,4.25*i,"$x$"),
  LabelAxe(x,2,"$t$",2),
  Width:=8, Color:=red, tMin:=-10, tMax:=2,
  EquaDif(y+i*(t*x+y+sin(t)),0,-1+i/2, 1),
  Color:=black, LabelStyle:=stacked,
  Label(-6+2*i,
   "$x’’-x’-tx=\sin(t)$\\
  with $x(0)=-1$ and $x’(0)=\frac12$")
  \end{texgraph}

 PIC



Differential equation