Explain why a symmetric matrix with real entries can't have complex eigenvalues.

Elementary Linear Algebra (MindTap Course List)
8th Edition
ISBN:9781305658004
Author:Ron Larson
Publisher:Ron Larson
Chapter7: Eigenvalues And Eigenvectors
Section7.CR: Review Exercises
Problem 65CR: Determine all nn symmetric matrices that have 0 as their only eigenvalue.
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Explain why a symmetric matrix with real entries can't have complex eigenvalues.
Transcribed Image Text:Explain why a symmetric matrix with real entries can't have complex eigenvalues.
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