11-8

> restart:

> evalc(Re(expand(x+I*y)^3));

> x:=r*cos(t):y:=r*sin(t):
z:=x^3-3*x*y^2:

> b:=plot3d([x,y,z],r=0..1,t=0..2*Pi,grid=[10,100],scaling=constrained,color=pink):b;

> with(plottools):
vrml(b,"c:/program files/maple 6/beauty/11-8.wrl",background_color=white);

>