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  • If A is a square matrix of order 3 and |A|= 2, then find the value of   

If A is a square matrix of order 3 and |A|= 2, then find the value of |-AA'|.

 

Answers (1)

\\ |-AA'| = (-1)^3 |A||A'| \\ = -|A|^2 \ \ \ \because |A| = |A'| \\ = -(2)^2\\ = -4

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