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For questions about using and representing matrices on a computer in order to solve computational problems. Should generally also include a tag about the specific property/problem you are solving (e.g. [tag:linear-algebra], [tag:eigenvalues], [tag:inverse].

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I've found and implemented a couple of ways, but when the dimension of the matrix is even a few hunderds, P(A) is not even close to the zero matrix. … ), but for larger dimenstions, it's better than MATLAB's 'poly' but still very far from the zero matrix. …
asked Dec 29 '16 by Niv Hoffman