Question: Problem 7. Suppose that an n x n matrix A can be computed as QBQ- where is an n x n orthogonal matrix, and

Problem 7. Suppose that an n x n matrix A can be

Problem 7. Suppose that an n x n matrix A can be computed as QBQ- where is an n x n orthogonal matrix, and B is an n x n diagonal matrix. Prove: A is a symmetric matrix.

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