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Simple matrix question

  1. Apr 15, 2008 #1
    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?
  2. jcsd
  3. Apr 15, 2008 #2
    Matrix multiplication does not work when the number of columns in the first matrix is not equal to the number of rows in the second matrix.
  4. Apr 15, 2008 #3
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