Q. 105.0( 1 Vote )

Using properties

Answer :

Given:



Apply R2 R2 – 3R1 and R3 R3 – 4R1



Apply R3 R3 – 3R2



Now expand along R3 we will get 1.



Hence, proved


OR


Given:



Taking common –1 from each row



D = –D


D = 0


The matrix is skew symmetric matrix.


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