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Math Help - discussion about the resolution of a system

  1. #1
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    discussion about the resolution of a system

    Hello I have an exercise of algebra it says to solve the system (S) below, but the prof told us that he had discussed depending on the values of :



    I have wanted to calculate the determinant following :




    If , the system is said "of Cramer" and like the system is homogeneous :

    the only solution is

    But what for ?
    Last edited by boolean; May 1st 2009 at 05:12 AM. Reason: latex syntax error
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  2. #2
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    If a system is homogeneous and \Delta= 0, then there exist an infinite number of solutions.
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  3. #3
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    We have :



    so there are 4 cases to study :

    is this what people expect me to do that :




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