97. Let A be an $n times n$ nonsingular matrix, B be an $n times n$ symmetric
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97. Let A be an $n \times n$ nonsingular matrix, B be an $n \times n$ symmetric matrix, and AB be an idempotent matrix. Show that A'B is also an idempotent matrix.
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Related Book For
Matrices With Applications In Statistics
ISBN: 9780534980382
2nd Edition
Authors: Franklin A Graybill
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