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3.2.3  3-d graph with rainbow colors

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 :

A piece of the surface z=x*sin(y) with rainbow colors

If you want the impression or the traduction Latex, you have to use :
MenuprintPrint(with Latex).

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