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Homework Help: Determinants and Adjoints

  1. Oct 17, 2009 #1
    1. The problem statement, all variables and given/known data

    Suppose A is a 33 matrix such that det(A)=15.

    Then det[A3((adj(A))−1)2]= and det[5A−1(adj(A))]


    2. Relevant equations

    I know the properties of determinants and inverses

    3. The attempt at a solution

    Problem simplifying to get a number.
  2. jcsd
  3. Oct 17, 2009 #2


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    Science Advisor
    Homework Helper

    If you know the properties of determinants and inverses, can't you at least explain what the problem you are having is?
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