If)" = a + ib is an eigenvalue of a real matrix A,..Qten its conjugate A = a - ib is
Chapter 6, Problem 9(choose chapter or problem)
If)" = a + ib is an eigenvalue of a real matrix A,..Qten its conjugate A = a - ib is also an eigenvalue. (If Ax = AX then also Ax = AX.) Prove that every real 3 by 3 matrix has at least one real eigenvalue.
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