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Solution


Q.

If A and B are symmetric matrices of the same order, then (AB' - BA')' is a:
1 Skew-symmetric matrix  
2 Null matrix  
3 Symmetric matrix  
4 None of the above  

Ans.

(1)

Ans.   Skew-symmetric matrix

Explanation:

Since (AB' - BA')' = (AB')' - (BA')' 

                             = (BA' - AB') 

                             = - (AB' - BA')