If A is a 2×2 matrix with trace(A) = 6 and det(A) = 8, then the sum of the eigenvalues of A is:
If A is a 2×2 matrix with trace(A) = 6 and det(A) = 8, then the sum of the eigenvalues of A is:
- A. 6
- B. 8
- C. 2
- D. 14
Answer: A) 6
Explanation: For any square matrix, the trace equals the sum of eigenvalues. So sum of eigenvalues = trace(A) = 6.
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