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Math Help - Entire function

  1. #1
    Super Member dhiab's Avatar
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    Entire function

    Solve in R :
    x^{2}-19\left[x\right]+88=0
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  2. #2
    Newbie Monocerotis's Avatar
    Joined
    Oct 2009
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    You could factor the function, and solve for x, this one happens to factor easily.
    x^2 - 11x - 8x + 88
    (x - 8)(x - 11) = 0

    x - 8 = 0
    x = 0 + 8

    Next
    x - 11 = 0
    x = 0 + 11

    There are your two x-coordinates.


    x^2 - 19x + 88 = 0

    or you could just plug in the values into the quadratic equation, the function is already in standard form.

    a = 1
    b = -19
    c = 88



    Just a note when entering the values, keep each value in a bracket with the original sign from the equation outside of the bracket.

    for example the first b value that shows up in the situation would be -b, which when the values are plugged in would be -(-19), which is 19.
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