N a branch of calculus concerned with maxima and minima of definite integrals 变分计算
Using calculus of variationS, necessary conditions of the optimization problem are developed.
使用变分法，推导出这种最佳化问题的必要条件。
The main methods are calculus of variations, finite element method and boundary element method.
实践证明复变函数方法是研究接触力学的行之有效的方法。
This paper investigates several equiyalent propositions of minimal curve surface by means of the euler equation of calculus of variations .
本文通过变分法欧拉方程推导出极小曲面的几个等价命题。
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