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Question

For the matrices A and B, verify that (AB)' =B'A', where A=143,B=[1 2 1]

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Solution

Here, AB=A=143[1 2 1]=121484363(AB)=121484363=143286143......(i)
Also, BA=[1 2 1]143=121[1 4 3]=143286143.........(ii)
From Eqs. (i)and (ii), we find that (AB)'=B'A'.


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