題組內容
1 Let A, B 
. Determine "true" or "false" for the following statements. If "true", prove it; if "false", give a counterexample.
(d) If A is symmetric, then all eigenvalues of A are real.
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1 Let A, B . Determine "true" or "false" for the following statements. If "true", prove it; if "false", give a counterexample.
(d) If A is symmetric, then all eigenvalues of A are real.