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Math Help - differential

  1. #1
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    differential

    the eccentricity of the ellipse x^2/4+y^2/3 is changed at the rate of 0.1/sec.the time at which it will touch the auxillary circle is

    i know auxilary circle equation that is

    x^2+y^2=a^2+b^2

    and eccentricity also
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  2. #2
    MHF Contributor FernandoRevilla's Avatar
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    Re: differential

    Quote Originally Posted by prasum View Post
    the eccentricity of the ellipse x^2/4+y^2/3 is changed at the rate of 0.1/sec.the time at which it will touch the auxillary circle is

    i know auxilary circle equation that is

    x^2+y^2=a^2+b^2

    and eccentricity also
    Could you transcribe the exact formulation of the problem?
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