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Math Help - Tangent line help

  1. #1
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    Sep 2009
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    Confusing tangent line question

    I'm supposed to find how any tangent lines go throught point (m,n) by using a tangent line i solved for earlier [which is: y-a^2=2a(x-a)] they say that this is enough for an eqaution of a and i can solve for a which will supposedly give me the conditions to find out how many tangent lines pass through point (m,n); can someone walk me through it please?
    Last edited by GomezH2O; October 1st 2009 at 07:47 PM. Reason: clarity
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