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MathGroup Archive 2005

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Surface Normal

  • To: mathgroup at
  • Subject: [mg55167] Surface Normal
  • From: "gouqizi.lvcha at" <gouqizi.lvcha at>
  • Date: Tue, 15 Mar 2005 00:21:52 -0500 (EST)
  • Sender: owner-wri-mathgroup at

Hi, All:

If I have a surface in parametric form

For example,
x = (10 + 5cosv)cosu
y = (10 + 5cosv)sinu
z = 5sinv

How can I quickly calculate its normal for any (u,v) by mathematica


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