if A is a m by n matrix & B is a matrix

Asked by sharmistha.panda | 11th Jun, 2013, 10:41: AM

Expert Answer:

Since A is of order m by n and AB is defined,
the number of rows in B is equal to the number of columns in A. so the number of rows in B is n.
 
Again A is of order m by n and BA is defined,
the number of columns in B is equal to the number of rows in A. so the number of columns in B is m.
 
Hence, tthe order of the matrix B is n by m.

Answered by  | 11th Jun, 2013, 10:03: PM

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