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Math Help - Determinant

  1. #1
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    Determinant

    Determinant nxn:



    Prove that for all n -

    Thank You!
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  2. #2
    MHF Contributor

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    Re: Determinant

    First, what is "n", the number of rows and columns?

    Second, what have you tried yourself? Have you calculated D_n for n= 1, 2, or 3? It looks to me as if expanding by "minors" along the first row or first column should give you hints about a proof by induction.
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