Q18 of 124 Page 213

If show that A’ A = I.

Given,



Then ,


Applying matrix multiplication we get,




Hence,


As we know that


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If and find a matrix X such that A + 2B + X = O.

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If and find a matrix X such that

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If A and B are symmetric matrices of the same order, show that (AB – BA) is a skew symmetric matrix.

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