1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Eccentricity of the Ellipse

  1. Aug 23, 2005 #1
    How would I find the eccentricity of the ellipse:
    x^2/49 + y^2/64 = 1

  2. jcsd
  3. Aug 23, 2005 #2


    User Avatar
    Homework Helper

    The standard form of an ellipse is [tex]\frac{{x^2 }}{{a^2 }} + \frac{{y^2 }}{{b^2 }} = 1[/tex].

    Another constant c is defined as: [itex]c^2 \equiv a^2 - b^2[/itex]

    Finally, we define the eccentricity as: [itex]e = \frac{c}{a}[/itex]
  4. Aug 23, 2005 #3


    User Avatar
    Science Advisor

    Do you know a formula for eccentricity? I would be very surprized if your textbook asks a question like this and does not include a formula!

    If your textbook does not have such a formula or you do not have a textbook (not a good idea!) you could go to "google.com" and enter "ellipse eccentricity". I just did that and found a very simple formula at the first hit.
  5. Aug 24, 2005 #4
    Thank you very much
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook