Sum
If A = `[(5, -3),(4, -3),(-2, 1)]`, prove that (AT)T = A.
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Solution
A = `[(5, -3),(4, -3),(-2, 1)]`
∴ AT = `[(5, 4, -2),(-3, -3, 1)]`
∴ (AT)T = `[(5, -3),(4, -3),(-2, 1)]`
A.
Concept: Algebra of Matrices
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