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Eigenvalues & Eigenvectorshard
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A 2×22 \times 22×2 invertible matrix AAA has eigenvalues λ1=2\lambda_1 = 2λ1​=2 and λ2=−1\lambda_2 = -1λ2​=−1. What are the eigenvalues of A−1A^{-1}A−1?