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Thread: Inequality

  1. Dec 12th 2008, 09:39 AM #1
    Apprentice123
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    Inequality

    Find m to that the inequality (m-3)x^2+4x+m<0 is valid for all values of x, except for one.


    Answer:
    m=-1
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  2. Dec 12th 2008, 10:36 AM #2
    running-gag
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    Quote Originally Posted by Apprentice123 View Post
    Find m to that the inequality (m-3)x^2+4x+m<0 is valid for all values of x, except for one.


    Answer:
    m=-1
    Hi

    You must have the discriminant equal to 0 (which gives m=-1 or m=4) and m-3 < 0
    Therefore m=-1 is the only possibility
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  3. Dec 12th 2008, 10:39 AM #3
    Apprentice123
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    Thank You
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