Question:
18. Let A be a 3x3 real nonsingular matrix such that A^-1 =
Last updated: 8/4/2022
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18. Let A be a 3x3 real nonsingular matrix such that A^-1 = A. Characterize its eigenvalues. 1. -2, 1, or -1 2. 1 or 2 3. -1 or -2 4. 1 or -1 5. -1, 1, or 2 6. None of the above.