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Math Help - Determinant calculation

  1. #1
    Newbie
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    Nov 2009
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    Determinant calculation

    How can i calculate this next determinant?

    2 2 ... 2 2 1
    2 2 ... 2 2 2
    2 2 ... 3 2 2
    ... ... ... ...
    2 n-1 ... 2 2 2
    n 2 ... 2 2 2


    Thanks for any help...
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  2. #2
    MHF Contributor

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    Subtract the first row from each of the other rows. What do you get? Then expand on the second row and use the fact that subtracting a row from another does not change the determinant.
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