Show that every eigenvalue of such a matrix is necessarily real. Let A be an n

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Show that every eigenvalue of such a matrix is necessarily real.


Let A be an n × n real matrix with the property that AT = A, let x be any vector in Cn, and let q = X̅T Ax. The equalities below show that q is a real number by verifying that q̅ = q. Give a reason for each step.


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Linear Algebra And Its Applications

ISBN: 9781292351216

6th Global Edition

Authors: David Lay, Steven Lay, Judi McDonald

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