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    I need some help with this Matrix problem from the 0606 Oct/Nov 2011 paper 13.
    This is the question
    Name:  Screenshot_2018-02-22-20-01-47-compressed.png.jpeg
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    This is the answer.
    Name:  Screenshot_2018-02-22-20-03-07-compressed.png.jpeg
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    I was fine until the -3 turned into -2
    I had the same answer for the first part but when A inverse switched sides I was totally lost.
    Why did that happen(-3 becoming -2) and how do I solve this? All help appreciated

    Thanx
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    (Original post by Gkaizerking)
    I need some help with this Matrix problem from the 0606 Oct/Nov 2011 paper 13.
    This is the question

    This is the answer.


    I was fine until the -3 turned into -2
    I had the same answer for the first part but when A inverse switched sides I was totally lost.
    Why did that happen(-3 becoming -2) and how do I solve this? All help appreciated

    Thanx
    Typo. It should not had changed. The next line is correct after that though.
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    Oh man. Thank you.
    You have no idea how much I was stressing over this.
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