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    Question

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    A 1, 2, 4 Correct Answer Incorrect Answer
    B 3, 2, 2 Correct Answer Incorrect Answer
    C 1, 1, 3 Correct Answer Incorrect Answer
    D 1, 3, 3 Correct Answer Incorrect Answer

    Solution

    characteristic equation det(A−λI)=0, where I is the identity matrix and λ represents the  eigenvalues. The eigenvalues are the values of λ that satisfy this equation: 3 − λ =0 ⟹ λ=3 λ−1=0 ⟹ λ=1 λ−3=0 ⟹ λ=3 The eigenvalues are 1, 3, 3.

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