# If A = [12-52-34-549], prove that AT = A. - Mathematics and Statistics

Sum

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

#### Solution

A = [(1, 2, -5),(2, -3, 4),(-5, 4, 9)]

∴ AT = [(1, 2, -5),(2, -3, 4),(-5, 4, 9)]
=A.

Concept: Algebra of Matrices
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