Question: Problem 5. Prove: if an n x n matrix A is orthogonal, then (i) A- definitely exists, and (ii) A must also be orthogonal.

Problem 5. Prove: if an n x n matrix A is orthogonal,

Problem 5. Prove: if an n x n matrix A is orthogonal, then (i) A- definitely exists, and (ii) A must also be orthogonal.

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