       • To: mathgroup at smc.vnet.net
• Subject: [mg12826] Re: [mg12792] quadric surfaces
• From: Sergio Terrazas <sterraza at campus.cdj.itesm.mx>
• Date: Fri, 12 Jun 1998 18:15:05 -0400
• Sender: owner-wri-mathgroup at wolfram.com

```Hi Russ!
Try
\!\(<< Graphics`ContourPlot3D`\n
ContourPlot3D[
x\^2\/16 - y\^2\/25 - 2\ z, {x, \(-4\), 4}, {y, \(-5\), 5}, {z,
\(-4\),
4}, BoxRatios \[Rule] {1, 1, 1}]; \n
Print[\*"\"\<\!\(x\^2\/16\)-\!\(y\^2\/25\)- 2 z= 0\>\""]\) You may
also want to take a look at my web page
http://www.cdj.itesm.mx/mathematica/mathematica.html and pick the
subject "Superficies" from the index.

I hope this helps
Sergio Terrazas
Instituto Tecnologico de Monterrey Campus Juarez

At 04:05 AM 6/1
2/98 -0400, you 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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