Results 1 to 3 of 3

Math Help - equation of a plane :(

  1. #1
    Newbie
    Joined
    Apr 2010
    Posts
    2

    equation of a plane :(

    find the equation of the plane:

    perpendicular to the line through A(2,3,1) and B(5.7,2) and through A.

    I get really confused and im not sure which equation to follow :S

    thanks
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Banned
    Joined
    Oct 2009
    Posts
    4,261
    Thanks
    2
    Quote Originally Posted by jd23 View Post
    find the equation of the plane:

    perpendicular to the line through A(2,3,1) and B(5.7,2) and through A.

    I get really confused and im not sure which equation to follow :S

    thanks

    This question doesn't belong here but in the pre-algebra section. Anyway, the cross product A\times B is always a vector perpendicular to both A,\,B , so evaluate the plane through this vector and through A .

    Tonio
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Newbie
    Joined
    Apr 2010
    Posts
    2
    I'm still getting the wrong answer I firstly found the vector product which is then equal to the normal vector. Used that in the Cartesian equation. Where am I going wrong :s correct answer is 3x + 4y + z = 19
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Replies: 2
    Last Post: March 1st 2011, 08:57 PM
  2. Replies: 3
    Last Post: December 5th 2010, 06:46 PM
  3. Replies: 3
    Last Post: October 12th 2010, 06:06 AM
  4. Replies: 4
    Last Post: May 26th 2010, 11:48 AM
  5. Replies: 2
    Last Post: May 23rd 2010, 11:46 AM

Search Tags


/mathhelpforum @mathhelpforum