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Showing 1 to 1 of 1 for “"Lagrange basis"”.
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Hybrid Symbolic-Numeric Computing in Linear and Polynomial Algebra
… for a pair of approximate polynomials given in a Lagrange basis. More precisely, we suppose that these polynomials are given by their approximate values at distinct known points. We first find each of their roots by using a Lagrange basis companion matrix for each polynomial. We introduce new …