Question: Prove that if a matrix A E Rm is orthogonal, then (Ax. Ay) = (x11!) for all x1y E Rm where {-. -) is the

Prove that if a matrix A E Rm\" is orthogonal,
Prove that if a matrix A E Rm\" is orthogonal, then (Ax. Ay) = (x11!) for all x1y E Rm where {-. -) is the standard inner product

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