Ononot — A 2 \times 2 invertible matrix A has eigenvalues \lambda1 =

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Eigenvalues & Eigenvectorshard

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A $2 \times 2$ invertible matrix $A$ has eigenvalues $\lambda_1 = 2$ and $\lambda_2 = -1$ . What are the eigenvalues of $A^{-1}$ ?