Hi,
I am not sure why I am not getting the same 3D image than the one at
the bottom of the next page:
http://reference.wolfram.com/mathematica/ref/ParametricPlot3D.html
I am using these commands:
u, v = var('u,v')
parametric_plot3d((u*cos(v),u*sin(v),imaginary(u*exp((I*v)^5)^(1/5))),
(u,0,2), (v,0,2*pi))
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