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Surface Normal

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

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

Rick

• Follow-Ups:
  • Re: Surface Normal
    • From: "Matthias Bode" <lvsaba@hotmail.com>