Results 1 to 3 of 3

Math Help - Ellipse problem with "a" and "b" parameters

  1. #1
    s3a
    s3a is offline
    Super Member
    Joined
    Nov 2008
    Posts
    597

    Ellipse problem with "a" and "b" parameters

    I don't know about other countries but in mine, the rule of an ellipse is:

    ((x-h)^2)/a^2 + ((y-k)^2)/b^2 = 1

    I determined the (h,k) to be (4,-6) which is right but how do I determine the proper a and b values?

    Any help would be greatly appreciated!
    Thanks in advance!
    Attached Thumbnails Attached Thumbnails Ellipse problem with "a" and "b" parameters-examquestionsimhavingtroublewith-1.jpg  
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Junior Member
    Joined
    May 2009
    From
    Zagreb
    Posts
    65
    Quote Originally Posted by s3a View Post
    I don't know about other countries but in mine, the rule of an ellipse is:

    ((x-h)^2)/a^2 + ((y-k)^2)/b^2 = 1

    I determined the (h,k) to be (4,-6) which is right but how do I determine the proper a and b values?

    Any help would be greatly appreciated!
    Thanks in advance!
    dont know for that rule...
    never heard of it.

    Anyway the rules for anything in math are the same everywhere.

    ellipse formula is:

    ( x/a )^2 + ( y/b )^2 = 1

    and the right answer is B) because you have ( 4, -3 ) , ( 4, -9 ) // ( x, y )

    if you put x = 4 in B) you will get y1 = -3, y2 = -9
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Super Member
    Joined
    Jan 2009
    Posts
    591
    Quote Originally Posted by s3a View Post
    ...

    ...how do I determine the proper a and b values?...

    !
    Typically a and b are the major and minor diameters of the ellipse.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Replies: 1
    Last Post: September 16th 2011, 02:08 AM
  2. Replies: 2
    Last Post: August 6th 2011, 04:00 PM
  3. Replies: 2
    Last Post: June 4th 2011, 01:11 PM
  4. Replies: 2
    Last Post: April 24th 2011, 08:01 AM
  5. Replies: 1
    Last Post: October 25th 2010, 05:45 AM

Search Tags


/mathhelpforum @mathhelpforum