For each of the following, factor the matrix A into a product QDQT where Q is orthogonal and D is diagonal. -3 -1 -17 (a) A = -1 4 -6 -1 -6 4 0 -1 2 10 Q= D = -1 1 1 1 1 1 0 0 -1 0 0 -4 0

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