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Re: Eigenvalue Problem


I can show that they don't have to be real:

Eigenvalues[{{1, 1}, {-1, 1}}]
{1 - \[ImaginaryI], 1 + \[ImaginaryI]}

Ken Levasseur
Math. Sci.
UMass Lowell

Steven Spear wrote:

> Hi, could someone show me how to use Mathematica to sucessfully answer the
> following problem:
> Show that the Eigenvalues of A =
> [a][b]
> [c][d]
> must be real numbers. Thanks, Steve

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