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प्रश्न
If A is invertible matrix of order 3 × 3, then |A–1| ______.
उत्तर
If A is invertible matrix of order 3 × 3, then |A–1| `1/|"A"|`.
Explanation:
We know that for an invertible matrix A of any order,
|A–1| = `1/|"A"|`.
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