Results 1 to 3 of 3

Math Help - I believe this has to do with conics (not sure)

  1. #1
    Newbie
    Joined
    Dec 2008
    Posts
    3

    I believe this has to do with conics (not sure)

    Hello,

    I have been staring at this question for awhile now, and I just can't seem to figure out what to do for either of the questions. Help would be very much appreciated.

    - Thanks


    Follow Math Help Forum on Facebook and Google+

  2. #2
    Super Member
    earboth's Avatar
    Joined
    Jan 2006
    From
    Germany
    Posts
    5,830
    Thanks
    123
    Quote Originally Posted by yaphetkotto View Post
    Hello,

    I have been staring at this question for awhile now, and I just can't seem to figure out what to do for either of the questions. Help would be very much appreciated.

    - Thanks


    Let C(x_C, y_C) denote the center of the ellipse. Then the equation of the ellipse is:

    \dfrac{(x-x_C)^2}{a^2} +\dfrac{(y-y_C)^2}{b^2} =1

    The length of the semi-axis pointing in x-direction is 3 and the length of the semi-axis pointing in y-direction is \frac92

    Plug in these values to get the equation of the ellipse:

    \dfrac{(x-3)^2}{3^2} +\dfrac{(y-\frac92)^2}{\left(\frac92 \right)^2} =1~~\implies~~\dfrac{(x-3)^2}{3^2} +\dfrac{4(y-\frac92)^2}{9^2} =1

    The second example has to be done in just the same way. Only the coordinates of the center has changed to C(-6, 0)
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Newbie
    Joined
    Dec 2008
    Posts
    3
    Thank you so much,

    What was once foggy is now so clear.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. TI 84 Plus Conics app?
    Posted in the Calculators Forum
    Replies: 1
    Last Post: March 6th 2010, 07:27 AM
  2. Conics!!!
    Posted in the Pre-Calculus Forum
    Replies: 2
    Last Post: January 13th 2008, 05:32 PM
  3. Conics
    Posted in the Pre-Calculus Forum
    Replies: 2
    Last Post: September 18th 2007, 06:02 AM
  4. Conics
    Posted in the Pre-Calculus Forum
    Replies: 2
    Last Post: September 1st 2007, 12:26 PM
  5. Replies: 2
    Last Post: August 28th 2007, 02:55 PM

Search Tags


/mathhelpforum @mathhelpforum