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Question
Let A be a nonsingular square matrix of order 3 × 3. Then |adj A| is equal to ______.
Options
| A |
| A |2
| A |3
3| A |
Solution
Let A be a nonsingular square matrix of order 3 × 3. Then |adj A| is equal to | A |2.
Explanation:
Offended, we know that |adj A| = |A|n-1 here n = 3
∴ |adj A| = |A|2
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