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Heeeelp me^_*

  1. May 10, 2008 #1
    Challenging Problems


    Develop a formula for the volume of an ellipsoid of the form
    x2\a2 +y2\b2 +z2\c2 = 1



    pls Help me;
    I need the answer today
     
    Last edited: May 10, 2008
  2. jcsd
  3. May 10, 2008 #2

    Defennder

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    You can parametrise it as follows:
    http://en.wikipedia.org/wiki/Ellipsoid

    Then perform a triple integration to find the volume in spherical coordinates. But the problem I got with this method is finding the limits of integration for p.
     
  4. May 10, 2008 #3
    Thank you very much Defennnder

    but I dont understand it .
     
  5. May 10, 2008 #4
    What exactly don't you understand? Are you familiar with using triple integrals in order to find the volume of some three-dimensional region?
     
  6. May 10, 2008 #5
    I want to underatand
    how I can develop a formula for the volume of an ellipsoid by that equation
     
  7. May 10, 2008 #6

    HallsofIvy

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    If you have no idea how to find a volume of rotation, why are you attempting a problem like this?
     
  8. May 10, 2008 #7
    Thank you HallsofIvy for helping me
     
  9. May 10, 2008 #8
    So

    there is no one can help me ???^-*
     
  10. May 10, 2008 #9

    HallsofIvy

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    Since you refuse to help yourself--
     
  11. May 10, 2008 #10

    Defennder

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    Does the method of volume by rotation work if all three semi-axes are unequal?
     
  12. May 10, 2008 #11
    it must be equal
     
  13. May 10, 2008 #12

    Defennder

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    Do you mean to say all are equal? Or 2 are equal? Because if all are equal, then you have a sphere. If only 2 are equal then you only need to find the volume by rotation by integration as Halls said.
     
    Last edited: May 10, 2008
  14. May 10, 2008 #13
    I am sorry
    2 are equal
     
  15. May 10, 2008 #14

    Defennder

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  16. May 10, 2008 #15
    Thank you alooooooooooooooooooooooooooooooooot
     
  17. May 10, 2008 #16
    ya
    I am from UoS
    Why??
    whze this??
     
  18. May 10, 2008 #17

    Defennder

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    Um just a reminder before the two of you get warnings from forum admins. Please do all your chatting through Private Messages.
     
  19. May 10, 2008 #18
    Ohhhhh
     
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