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2013年数学高考模拟卷(一)
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作者 叶望川 《中学教研(数学版)》 2013年第2期42-46,共5页
关键词 单调递减 单调递增
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Approximate solution for the Klein Gordon-Schrdinger equation by the homotopy analysis method 被引量:1
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作者 王佳 李彪 叶望川 《Chinese Physics B》 SCIE EI CAS CSCD 2010年第3期83-89,共7页
The Homotopy analysis method is applied to obtain the approximate solution of the Klein-Gordon Schrodinger equation. The Homotopy analysis solutions of the Klein-Gordon Schrodinger equation contain an auxiliary parame... The Homotopy analysis method is applied to obtain the approximate solution of the Klein-Gordon Schrodinger equation. The Homotopy analysis solutions of the Klein-Gordon Schrodinger equation contain an auxiliary parameter which provides a convenient way to control the convergence region and rate of the series solutions. Through errors analysis and numerical simulation, we can see the approximate solution is very close to the exact solution. 展开更多
关键词 Klein-Gordon-Schrodinger equation homotopy analysis method approximate solution
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Extended Symmetry of Generalized Variable-Coefficient Kadomtsev-Petviashvili Equation
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作者 王佳 李彪 叶望川 《Communications in Theoretical Physics》 SCIE CAS CSCD 2010年第4期698-702,共5页
In this paper, the extended symmetry of generalized variable-coeFficient Kadomtsev-Petviashvili (vcKP) equation is investigated by the extended symmetry group method with symbolic computation. Then on the basis of t... In this paper, the extended symmetry of generalized variable-coeFficient Kadomtsev-Petviashvili (vcKP) equation is investigated by the extended symmetry group method with symbolic computation. Then on the basis of the extended symmetry, we can establish relation among some different kinds of vcKP equations. Thus the exact solutions of these veKP equations can be constructed via the simple veKP equations or constant-coefficient KP equations. 展开更多
关键词 extended symmetry generalized variable-coefficient KP equation
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Sinh-Gordon方程的同伦近似解 被引量:1
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作者 叶望川 李彪 王佳 《物理学报》 SCIE EI CAS CSCD 北大核心 2011年第3期34-38,共5页
本文利用同伦分析方法得到了Sinh-Gordon方程的近似解.在所得到的解中包含一个辅助参数,可以有效地控制级数解的收敛范围和收敛速度.
关键词 同伦分析方法 SINH-GORDON方程 近似解
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