Results 1 to 2 of 2

Math Help - ellipse axes

  1. #1
    Junior Member
    Joined
    Feb 2006
    Posts
    32

    ellipse axes

    Hi,

    Once I have found the max and min values of (X^2)+(y^2), how would I go about finding the lengths of the major and minor semi-axes of a specified central ellipse.

    Thanks.
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Senior Member
    Joined
    Apr 2006
    Posts
    399
    Awards
    1
    Quote Originally Posted by jedoob View Post
    Hi,

    Once I have found the max and min values of (X^2)+(y^2), how would I go about finding the lengths of the major and minor semi-axes of a specified central ellipse.

    Thanks.
    Max x^2+y^2 occurs at (x,y) = (a,0) because ellipse is inside circle of radius a. So max x^2+y^2 = a^2. Likewise min x^2+y^2 = b^2.

    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Translation of axes
    Posted in the Geometry Forum
    Replies: 1
    Last Post: June 23rd 2009, 03:23 PM
  2. rotation of axes
    Posted in the Pre-Calculus Forum
    Replies: 3
    Last Post: May 11th 2009, 07:37 PM
  3. Replies: 2
    Last Post: December 19th 2008, 04:01 AM
  4. Ellipse -semimajor-seminor axes help!!!
    Posted in the Geometry Forum
    Replies: 3
    Last Post: November 21st 2007, 09:59 AM
  5. Semi-axes of an ellipse
    Posted in the Advanced Math Topics Forum
    Replies: 0
    Last Post: October 25th 2007, 10:47 AM

Search Tags


/mathhelpforum @mathhelpforum