Results 1 to 2 of 2

Math Help - Unit Normal to plane

  1. #1
    Junior Member
    Joined
    Aug 2008
    From
    USA
    Posts
    40

    Unit Normal to plane

    Plane equation is given as

    z = 1 + 2x + 3y

    Find the unit normal to plane...

    i am using the equation ( r - r_0 ) . N = 0 but there seems to be the missing r_0....

    how can i proceed? using grad which also give me the unit norm... but grad is to be act on a scalar.... i'm stuck

    many thanks!
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor

    Joined
    Aug 2006
    Posts
    18,657
    Thanks
    1614
    Awards
    1
    Quote Originally Posted by Chris0724 View Post
    Plane equation is given as
    z = 1 + 2x + 3y
    Write the plane as {\color{blue}2}x+{\color{blue}3}y{\color{blue}-1}z=-1
    The colors in blue give you the normal which is {\color{blue}<2,3,-1>}.
    If you divide by its length, then you have an unit normal.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Unit normal
    Posted in the Geometry Forum
    Replies: 4
    Last Post: September 10th 2010, 08:23 PM
  2. Calculating the unit normal of a plane
    Posted in the Calculus Forum
    Replies: 1
    Last Post: May 29th 2010, 01:58 PM
  3. normal plane to the curve intersecting a plane
    Posted in the Calculus Forum
    Replies: 2
    Last Post: October 23rd 2009, 09:53 AM
  4. Unit Vector oeroendicular to a plane
    Posted in the Calculus Forum
    Replies: 3
    Last Post: September 13th 2009, 03:39 PM
  5. Unit Normal
    Posted in the Calculus Forum
    Replies: 1
    Last Post: October 18th 2008, 05:08 AM

Search Tags


/mathhelpforum @mathhelpforum