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Math Help - Tangent plane

  1. #1
    Junior Member
    Joined
    Feb 2010
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    30

    Tangent plane

    i'm stuck on this problem.

    r(u,v) = U^2 i + 2usinv j + ucosv k u =1, v = 0

    i already got their partial derivatives

    ru(u,v) = 2u +2sinv + cosv

    rv(u,v) = 2ucosv -usinv

    but i'm stuck here. can i assume that in(z - zo) that zo is zero?
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  2. #2
    Junior Member
    Joined
    Feb 2010
    Posts
    30

    think i got it..

    Quote Originally Posted by greencheeseca View Post
    i'm stuck on this problem.

    r(u,v) = U^2 i + 2usinv j + ucosv k u =1, v = 0

    i already got their partial derivatives

    ru(u,v) = 2u +2sinv + cosv

    rv(u,v) = 2ucosv -usinv

    but i'm stuck here. can i assume that in(z - zo) that zo is zero?
    i got r = 3u + 2v - 1
    is this correct?
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