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Re: quadric surfaces


What's wrong with

ParametricPlot3D[{u,v,u v},{u,-1,1},{v,-1,1}]  ?

Which text book are you referring to?

Alfred Gray


%%%%%%%%%%%%%%%%%%%%%%%%%%
Visit the galleries of surfaces and curves: http://bianchi.umd.edu

Just published: Modern Differential Geometry of Curves and Surfaces,
Second Edition.  CRC Press, December 1997.

On Fri, 12 Jun 1998, Russell.E.Goodman wrote:

> Hello all...  I'm working on some Mathematica for a Calc IV course and
> needed some help with quadric surfaces.  How can you get
> Mathematicatica to graph a nice looking hyperbolic paraboloid as well
> as other quadric surfaces like you see in the textbooks.  I've ended up
> using ParametricPlot3D, CylindricalPlot, and others but I still can't
> get a perfect/textbook example of a hyperbolic paraboloid.  Help??
> 
> Russ Goodman
> University of Oklahoma -- Department of Mathematics rgoodman at ou.edu
> 
> 



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