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Math Help - Eigenvalue proof

  1. #1
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    Eigenvalue proof

    Let A and B be n*n matrices. Show that AB and BA have the same eigenvalues.
    (Hint: Consider separately the two cases (i) B is invertible, and
    (ii) B is not invertible.
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  2. #2
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    Quote Originally Posted by ulysses123 View Post
    Let A and B be n*n matrices. Show that AB and BA have the same eigenvalues.
    (Hint: Consider separately the two cases (i) B is invertible, and
    (ii) B is not invertible.
    http://www.mathhelpforum.com/math-he...tml#post513354
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