 
 
 
plotfunc represents a pure imaginary expression i*E
of two variables with a rainbow color depending 
on the value of z=E. This gives an easy way to 
find points having the same third coordinate.
The first arguments of plotfunc must be i*E instead of E,
the remaining arguments are the same 
as for a real 3-d graph (cf 3.2.2)
Input :
Output :
Remark
 If you want the impression or the traduction Latex, you have to use :
Menu▸print▸Print(with Latex). 
 
 
