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Thread: How to solve a matrix equation in Mathematica

  1. #1
    Forum Admin topsquark's Avatar
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    How to solve a matrix equation in Mathematica

    The question came up as I was solving a problem in another Forum:
    $\displaystyle \left [ \begin{matrix} a & b & c \end{matrix} \right ] ~ \left [ \begin{matrix} 28 & 91 \\ 453 & 712 \\ 9012 & 1024 \end{matrix} \right ] = \left [ \begin{matrix} 81.534 & 49.091 \end{matrix} \right ] $

    Mathematica is not letting put this in so I can solve for a, b, c. And yes I know I have too many degrees of freedom. I was going to use a = 1, but I can't set this up. Mathematica won't even let me put in the LHS. I can solve this problem if I write it as a system of equations. I just can't get it to go in matrix format.

    Does anyone have any thoughts?

    -Dan
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  2. #2
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    Re: How to solve a matrix equation in Mathematica

    How to solve a matrix equation in Mathematica-clipboard01.jpg
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    Forum Admin topsquark's Avatar
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    Re: How to solve a matrix equation in Mathematica

    Ahhhh! I forgot the "dot." Thanks!

    -Dan
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    Re: How to solve a matrix equation in Mathematica

    In this problem just calculate the inverse of second matrix and multiply it with the matrix at the right hand side, you will definitely get it solved.
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