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Math Help - simple matrix question

  1. #1
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    simple matrix question

    simple matrix question


    For Matrix A; size (3 x 1)
    Matrix B; size (1 x 3)

    AB = (3 x 3)

    But when does matrix multiplication not work
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  2. #2
    Super Member flyingsquirrel's Avatar
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    Apr 2008
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    Hello

    The product AB is not defined if the number of columns of A is different from the number of rows of B. For example, you can not evaluate AB with A and B of size 3x1.
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  3. #3
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    cheers

    Cheers
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