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Let A be the2xx2 matrix Find |adj(A)| i...

Let A be the`2xx2` matrix Find |adj(A)| if determinant of A Is 9

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The correct Answer is:
D
`because abs(A) =2`
`and B = 9A^(2)" " (given)`
`therefore abs(B) = abs(9A^(2)) = 9^(2) abs(A )^(2)`
`= 81 xx4 = 324 rArr abs(B^(T)) = abs(B) = 324`
Hence, Statement-1 is false but Statement-2 is true.
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