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Eigenvalues & Eigenvectorseasy
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A 3×33 \times 33×3 matrix has eigenvalues λ1=1\lambda_1 = 1λ1​=1, λ2=2\lambda_2 = 2λ2​=2, and λ3=−2\lambda_3 = -2λ3​=−2. What is det⁡(A)\det(A)det(A)?