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Homework Help: I want check my answers

  1. Mar 16, 2010 #1
    Hi all

    I want check my answers​

    Attached Files:

  2. jcsd
  3. Mar 16, 2010 #2


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    Staff: Mentor

    It says it was a timed exam?
  4. Mar 16, 2010 #3
    The upper right number in the answer of the first question is wrong. The rest is Ok.

    The second matrix multiplication was with an unity matrix. You didn't have to write that one out.
  5. Mar 16, 2010 #4


    Staff: Mentor

    Usually called identity matrix.
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