Question: Prove that if A is an upper (lower) triangular matrix, then the eigenvalues of A are the elements on the main diagonal of A?

Prove that if A is an upper (lower) triangular matrix, then the eigenvalues of A are the elements on the main diagonal of A?

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Let A a ij be an n n upper triangular matrix that is a ij 0 for i j Then the charact... View full answer

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