Ononot — If A is a 2 \times 2 matrix with eigenvalues \lambda1, \lamb

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Eigenvalues & Eigenvectorsmedium

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If $A$ is a $2 \times 2$ matrix with eigenvalues $\lambda_1, \lambda_2$ , then $\det(A) = \lambda_1 \lambda_2$ . Which of the following is also true?