[Tugindia] Drawing a surface with a tangent plane

David Owen twychicky at gmail.com
Thu Aug 27 22:17:55 CEST 2009

Hi, Everybody,
Can anyone tell me how I may draw, in a Latex document, a 3D-surface
together with a tangent plane at a point on that surface with the outward
tangent at that point? Is there any Graphics package which will help me do
this? Is this the correct place to ask this question?
Thanks very much.

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