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प्रश्न
Which of the following matrices are singular or non singular?
`[(7, 5),(-4, 7)]`
योग
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उत्तर
Let A = `[(7, 5),(-4, 7)]`
∴ |A| = `|(7, 5),(-4, 7)|`
= 49 + 20
= 69 ≠ 0
∴ A is a non-singular martix.
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Determinant of a Matrix
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