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Math Help - Sum and Product of Matrices

  1. #1
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    Sum and Product of Matrices

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    Two matrices may be multiplied provided the number of elements in the rows of A=number of elements in the columns of B. So, there is not a single pair that could be multiplied in this question? And what about A*2 and addition ?
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    Quote Originally Posted by Tron View Post
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    Two matrices may be multiplied provided the number of elements in the rows of A=number of elements in the columns of B. So, there is not a single pair that could be multiplied in this question? And what about A*2 and addition ?

    The products BC\,,\,DB\,,\,CA\,,\,A^2\,,\,D^2 exist .

    And the most correct way to tell the condition for multiplication: we can multiply two

    matrices iff the the left matrix's number of columns equals the right one's number of rows.

    Tonio
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