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Homework Help: Determine the matrix A^TA

  1. Dec 7, 2007 #1
    3. a) Assume that A^−1 =

    1 0 1
    2 1 3
    1 0 2

    Determine the matrix A^TA
     
  2. jcsd
  3. Dec 7, 2007 #2
    what is (A^-1)^-1
     
  4. Dec 7, 2007 #3

    Chris Hillman

    User Avatar
    Science Advisor

    Are these homework problems? If so, you should move these questions here. Note that "Homework Help" has some special rules, including this: you should show some work.
     
  5. Dec 7, 2007 #4
    nah it was on a past mid term that i was looking at i have a final coming up soon so i was just wondering but i figured it out after computing (A^-1)^-1

    i guess that is A so I just take the transpose of that and multiply it by A
     
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