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What are the dimensions of ab

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Reference no: EM131001654

a.)  If A is a 6x4 matrix and B is a 4x3 matrix, what are the dimensions of AB? (If the matrix multiplication is undefined say so) 

b.)  C = 0  r  4                  D = 1  -5                         CD = ???

            -1  3  7                         x   3

             s   t   2                        0    y      

 

Reference no: EM131001654

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