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Math Help - Solving for a matrix?

  1. #1
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    Solving for a matrix?

    I'm totally lost.

    [-18 8 -11] = [-9 8 -8]-3x


    I just tried solving it backwards.

    [-27 0 -19] = -3x
    divide by -3

    [9 0 19/3] = x
    Is that right?
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  2. #2
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    Re: Solving for a matrix?

    Quote Originally Posted by breebreebran31 View Post
    I'm totally lost.

    [-18 8 -11] = [-9 8 -8]-3x


    I just tried solving it backwards.

    [-27 0 -19] = -3x
    divide by -3

    [9 0 19/3] = x
    Is that right?
    [-18 8 -11] - [-9 8 -8] = [-9 0 -3]

    not [-27 0 -19]

    then you are left with

    -3x = [-9 0 -3]

    which should be pretty easy to solve

    Antarctica? Really?
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  3. #3
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    Re: Solving for a matrix?

    Quote Originally Posted by romsek View Post
    [-18 8 -11] - [-9 8 -8] = [-9 0 -3]

    not [-27 0 -19]

    then you are left with

    -3x = [-9 0 -3]

    which should be pretty easy to solve

    Antarctica? Really?
    How come the equation turned into [-18 8 -11] - [-9 8 -8] = [-9 0 -3]
    but then you still put -27. Wouldn't -18 - -9 be -9?
    I put Antarctica because I hate putting information online


    Never mind. I looked at my post while I typed this so I was thinking you put -27.
    My bad. I get it now. Thanks/.
    Last edited by breebreebran31; February 25th 2014 at 06:21 PM.
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