> #sfb jan 10, 2002
> f:=sin(x+y);
> L:=3; a:=plot3d(f,x=0..2*Pi,y=0..2*Pi,style=WIREFRAME):
> 
> L;
> g:=sin(x*y);
> b:=plot3d(g,x=0..2*Pi,y=0..2*Pi,numpoints=4000):
> with(plots):
> display(a,b);
>