Lagrange polynomial

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English

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Etymology

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Named after Joseph Louis Lagrange, who published on the topic in 1795, though the method was first discovered in 1779 by Edward Waring.

Noun

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Lagrange polynomial (plural Lagrange polynomials)

  1. (mathematics) For a given set of points with no two values equal, the polynomial of lowest degree that assumes at each value the corresponding value , so that the functions coincide at each point.