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Thread: Diagonalizable question

  1. #1
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    Diagonalizable question

    Show that if a matrix A is diagonalizable, then its trace is the sum of its eigenvalues. Any help would be great I'm having trouble with this proof!
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  2. #2
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    Re: Diagonalizable question

    $\displaystyle trace(PAP^{-1})= trace(A)$.
    Trace (linear algebra) - Wikipedia, the free encyclopedia
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