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    BINAY KRISHNA M's Avatar
    BINAY KRISHNA M Posts: 2, Reputation: 1
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    #1

    Sep 4, 2012, 08:08 PM
    equation of the parabola with directrix at origin the focal chord at X axis
    What is the equation of the parabola which has the origin at directrix and focal chord at X axis?
    ebaines's Avatar
    ebaines Posts: 12,131, Reputation: 1307
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    #2

    Sep 5, 2012, 06:30 AM
    This doesn't make much sense - please clarify the question. Teh focal point of a parabola is a point, not a chord' and the directrix is a chord, not a point. So perhaps you have these terms vbackwards. But even so - if the focal point lies on the directrix as you have indicated the resulting parabola is not a parabola at all but rather merely a line.
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