Math Is Fun Forum

calccrypto

Member

Registered: 2010-03-06

Posts: 96

tangent plane of equation with more outputs than inputs

how do you find the tangent plane of an equation like r(u,v) = (e^u, e^v,uv) at (1,1,0)? and i forget: would i use (u,v) = (0,0), or would i use (1,1,0) for the point? if i do use (1,1,0), what do i take the last derivative (d(uv)/d?) in respect to?

Last edited by calccrypto (2010-10-12 00:37:08)

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Visit calccrypto.wikidot.com for detailed descriptions of algorithms and other crypto related stuff (not much yet, so help would be appreciated).

bobbym

bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: tangent plane of equation with more outputs than inputs

Hi cal;

Can you humor an old man and watch this video, you might get a lot more out of it. Also the Prof there is about 150 years ahead of me. It is 50 minutes, so get a sandwich first.

http://www.mathvids.com/lesson/mathhelp … gent-plane

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In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.