Results 1 to 2 of 2

Math Help - tangent.....

  1. #1
    Member
    Joined
    Jul 2006
    Posts
    95

    find equation of the tangent and normal plane......

    Hello,
    plz try to solve that question.Thanks
    Attached Files Attached Files
    Last edited by m777; April 15th 2007 at 08:44 AM.
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Newbie
    Joined
    Apr 2007
    Posts
    4
    here's a hint for the tangent plane: take the gradient of the equation. If you get something like x^2 * y +z ^ 32 * x*y, then next you need to write the equation of this tangent plane. As this is the (fictional) gradient, you need to consider what would happen near the point P(1,2,3), which implies considering (x-1)^2 * (y-2) + (z-3)^32 * (x-1) * (y-2). Now, I may be wrong, because the problem asks for a tangent plane, but the above equation (and the one you'd obtain taking the gradient in your question) is not actually a plane, i.e. you cannot express your gradient as Ax+By+cZ=D (sound familiar? it's the general equation for a tangent plane), where A,B,C,D are all constants.

    The normal plane is left to you. If you want more advice, do more work.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Replies: 1
    Last Post: September 27th 2011, 12:17 PM
  2. Replies: 6
    Last Post: January 12th 2011, 02:38 PM
  3. Replies: 6
    Last Post: April 7th 2010, 02:34 PM
  4. Tangent
    Posted in the Calculus Forum
    Replies: 3
    Last Post: March 8th 2010, 04:42 AM
  5. Replies: 3
    Last Post: February 20th 2009, 05:28 AM

Search Tags


/mathhelpforum @mathhelpforum