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  1. #1
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    parabola

    if focus of a parabola is(1,2) and feet of perpendiculars on any two tangents to this parabola from locus are (3,4) and (4,6) then the vertex of parabola is

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  2. #2
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    Re: parabola

    Quote Originally Posted by prasum View Post
    if focus of a parabola is(1,2) and feet of perpendiculars on any two tangents to this parabola from locus are (3,4) and (4,6) then the vertex of parabola is

    how to use above information help
    Maybe you are looking for this(?): Parabola -- from Wolfram MathWorld

    Scroll down below equation (16)!
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