Thanks!!!
On Dec 3, 6:28 am, Marshall Hampton <[EMAIL PROTECTED]> wrote:
> Mathematica does have some extra abilities in 3D graphics compared
> with Sage. We do have the infrastructure in place to catch up though,
> I hope to help with things like this soon.
>
> I think for your example Sage isn't handling the multiple roots
> properly; I'm not sure how to really fix that but I did do the
> following and got closer:
>
> u, v = var('u,v')
> assume(u>0)
> p15 = sum([parametric_plot3d((u*cos(v),u*sin(v),imaginary(u^(1/5.0)*exp
> (I*v+q*2*I*pi/5))), (u,0,2), (v,0,2*pi), opacity = .5, rgbcolor =
> (0,1,0), frame = False) for q in range(5)])
> show(p15)
>
> which I think is pretty close to the mathematica plot except it
> includes the entire surface by default.
>
> Hope that helps,
> M. Hampton
>
> On Dec 2, 7:20 pm, acardh <[EMAIL PROTECTED]> wrote:
>
> > 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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