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Florimond de Beaune (7 October 1601, Blois – 18 August 1652, Blois) was a French jurist〔 and mathematician, and an early follower of René Descartes.〔. The material on de Beaune is on (p. 187 ).〕 R. Taton calls him "a typical example of the erudite amateurs" active in 17th-century science.〔 In a 1638 letter to Descartes, de Beaune posed the problem of solving the differential equation : now seen as the first example of the inverse tangent method of deducing properties of a curve from its tangents.〔.〕〔.〕 His ''Tractatus de limitibus aequationum'' was reprinted in England in 1807;〔Reprinted in ''Scriptores Logarithmici: Or, A Collection of Several Curious Tracts on the Nature and Construction of Logarithms, Mentioned in Dr. Hutton's Historical Introduction to His New Edition of Sherwin's Mathematical Tables: Together with Some Tracts on the Binomial Theorem and Other Subjects Connected with the Doctrine of Logarithms, Francis Maseres'', collected by Charles Hutton and printed by J. Davis, 1807, (p. 217ff ).〕 in it, he finds upper and lower bounds for the solutions to quadratic equations and cubic equations, as simple functions of the coefficients of these equations.〔 His ''Doctrine de l'angle solide'' and ''Inventaire de sa bibliothèque'' were also reprinted, in Paris in 1975.〔.〕 Another of his writings was ''Notae breves'', the introduction to a 1649 edition of Descartes' ''La Géométrie''.〔.〕 ==References== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Florimond de Beaune」の詳細全文を読む スポンサード リンク
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