If A is a square matrix of order 2, then |adj A| is equal to :
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → $|A|$
n → order of A
$|adj\, A|=|A|^{n-1}$
here $|adj\, A|=|A|^{2-1}=|A|$
If A is a square matrix of order 2, then |adj A| is equal to :
Correct answer: option 2
The correct answer is Option (2) → $|A|$
n → order of A
$|adj\, A|=|A|^{n-1}$
here $|adj\, A|=|A|^{2-1}=|A|$