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    SuperNonblast's Avatar
    SuperNonblast Posts: 1, Reputation: 1
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    #1

    Sep 6, 2011, 09:02 PM
    How do you prove this?
    If 2 tangents to the parabola x = 2at, why =at^2 meet at right angles at Q and the normals at their points of contact meet at R, prove that QR is parallel to the axis of the parabola
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
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    #2

    Sep 7, 2011, 03:34 AM
    I can't understand your question. Post the original question and your attempt at the solution.
    FadedMaster's Avatar
    FadedMaster Posts: 1,510, Reputation: 148
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    #3

    Sep 7, 2011, 05:03 AM
    Also, are you looking for a written proof, or just a drawn proof.

    By the way, to anyone else that reads this, the system auto corrected the letter "y" to the word "why".
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