1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

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
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook