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Determinant of nxn Matrix

  1. Oct 17, 2015 #1
    1. The problem statement, all variables and given/known data
    Shown In the picture. I went to the prof for help he said and i quote :" don't use laplas expansion to find the determinate, it will take you for ever."

    2. Relevant equations
    I don't even know how to do this. prof had no notes on this and Boas is a god awful book for learning anything.

    3. The attempt at a solution
    Add every row to the last row. 1/last row - every other row. then every row minus the last. but my prof wanted it solved with indices. I dont know what that is or how to apply it as it has never came up.
     

    Attached Files:

  2. jcsd
  3. Oct 17, 2015 #2
    Adding one row to another and eliminate the order of the matrix, which may help.
     
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