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CBSE Class 12-science Answered

if A is a m by n matrix & B is a matrix
Asked by sharmistha.panda | 11 Jun, 2013, 10:41: AM
answered-by-expert 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 | 11 Jun, 2013, 10:03: PM
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