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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Citrabhanu ： ウィキペディア英語版 Citrabhanu Citrabhānu (fl. 1530) was a mathematician from the Kerala school in the 16th century. He gave integer solutions to 21 types of systems of two simultaneous Diophantine equations in two unknowns.〔.〕 These types are all the possible pairs of equations of the following seven forms:〔.〕 $\backslash \; x\; +\; y\; =\; a,\; x\; -\; y\; =\; b,\; xy\; =\; c,\; x^2\; +\; y^2\; =\; d,\; x^2\; -\; y^2\; =\; e,\; x^3\; +\; y^3\; =\; f,\; x^3\; -\; y^3\; =\; g$ For each case, Citrabhanu gave an explanation and justification of his rule as well as an example. Some of his explanations are algebraic, while others are geometric. ==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「Citrabhanu」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.