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प्रश्न
If A = `[(1, 2, -5),(2, -3, 4),(-5, 4, 9)]`, prove that AT = A.
उत्तर
A = `[(1, 2, -5),(2, -3, 4),(-5, 4, 9)]`
∴ AT = `[(1, 2, -5),(2, -3, 4),(-5, 4, 9)]`
=A.
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