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Re: Banded triadiagonal eigenvalues

dkjk at wrote:
> Hi,
> I'm trying to solve a pair of coupled ODEs using the finite difference
> method.  As such I need to find eigenvalues/eigenvectors of banded
> tridiagonal matrices.
> I don't trust the results I'm getting from Eigensystem.
> Does mathematica have any dedicated algorithm for such matrices?

Take a look at the Linear Algebra section in Advanced Topics in the 

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