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MathGroup Archive 2005

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Re: region bounded by surfaces

  • To: mathgroup at
  • Subject: [mg61166] Re: region bounded by surfaces
  • From: "Jens-Peer Kuska" <kuska at>
  • Date: Tue, 11 Oct 2005 06:19:13 -0400 (EDT)
  • Organization: Uni Leipzig
  • References: <difq5e$f4f$>
  • Sender: owner-wri-mathgroup at


and rewrite it into an implicit function, like
If[2 - y^2 - z^2 < 0 || 2 - y^2 - x^2 < 0, 1, 0]

and use ContourPlot3D[] does not help ??

You man also cut the two parametric surfaces with 
the implicit versions by hand.



"David Turner" <dturner at> schrieb im 
Newsbeitrag news:difq5e$f4f$1 at
| Hello,
| I did not describe my problem accurately in 
surface intersection.  I should have said:
| I wish to plot the region bounded by the 
surfaces x = Sqrt[2 - y^2] and z = Sqrt[2 - y^2] 
which lies in the first octant.  I wish for the 
plot to be limitd to only the region bounded by 
the surfaces.  My best attempt is
| ParametricPlot3D[{{Sqrt[2-t^2+0.00001], t, u}, 
{u, t, Sqrt[2-t^2+0.00001]}},
| {t, 0, Sqrt[2]}, {u, 0, Sqrt[2]}, ViewPoint -> 
{2.75, 2.4, 1}];
| However, this shows more than the region bounded 
by the surfaces.
| Any ideas?
| Thanks in advance.

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