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What is this Matrix question asking me to do?

  1. Sep 17, 2015 #1
    It's from the chapter on Matrix Inverses...

    8OhFzgi.jpg

    imgur link: http://i.imgur.com/8OhFzgi.jpg

    This is the entirety of the exercise. It's not following on from or setting anything else up. That's just number 42...what can I do with this?
     
  2. jcsd
  3. Sep 17, 2015 #2

    mfb

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    I don't see a question.

    You can show that MM-1=I in each case.
     
  4. Sep 17, 2015 #3
    What are the four block matrices at the bottom all about?
     
  5. Sep 17, 2015 #4

    mfb

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    Staff: Mentor

    The matrices above seem to help if you want to invert the block matrices below.
     
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