1) undetermined coefficient
待定系数
1.
The difficulty in decomposing rational function into partial fraction is to fix the undetermined coefficient in partial fraction.
将有理函数分解为部分分式的难点就是确定部分分式中的待定系数。
2.
By the method of undetermined coefficient,a solution method for certain inhomogeneous differential equations with constant coefficients is given.
利用待定系数法给出带常系数某类非齐微分方程组的一种解法,该方法较常规的方法简便,同时研究了Euler微分方程组。
3.
The simple method to resolve rational proper franctions is to multiply proper fractors to the two sides of a equation,then to take limit,and gain undetermined coefficients.
有理真分式简易分解的基本方法是等式两边同乘以适当因式 ,再取极限 ,求出待定系数 。
2) Method of Undetermined Coefficients
待定系数法
1.
The application of method of undetermined coefficients in higher mathematics --To cultivate vocational students capacity of induction and application;
待定系数法在高等数学中的应用——培养高职学生的归纳及应用能力
2.
It can be structured by interpolation or be got by method of undetermined coefficients.
利用差分论证了等幂和一般公式的唯一性,它可用插值法构造,也可用待定系数法求得。
3.
In this paper, two integral variation methods, method of undetermined coefficients and method of direction variation integration, which were first set up for the inverse variation problem of potential functions on KdV equation, are respectively applied to the inverse variation problem of the mKdV equation and the Harry Dym equation.
针对 Kd V方程势函数的变分反问题所建立的一类积变分变分反问题的两种积变分方法 ,待定系数法和直接积变分法 ,推广应用到 m Kd V方程和 Harry Dym方程势函数的变分反问题 。
3) undetermined coefficient method
待定系数法
1.
Up-wind scheme based on the undetermined coefficient method
基于待定系数法的改进迎风格式
2.
By using the undetermined coefficient method, a new scheme is derived from the HAUC2 scheme to simulate the two dimensional convection-diffusion equation.
运用待定系数法,建立了求解二维对流扩散方程的HAUC2格式。
3.
A new higher accuracy scheme named as ILF(Improved Leap-frog) scheme is developed by (using) the undetermined coefficient method to improve Leap-frog scheme.
运用待定系数法,对Leap-frog格式进行了改进,构造出一新的高精度ILF格式,新格式有非保守型和保守型两种。
4) method of undetermined coefficient
待定系数法
1.
Computing the equations of beams deflection curve by method of undetermined coefficients is expounded,and expressions of undetermined coefficients are deduced.
阐述用待定系数法解梁的挠曲线方程，推导出待定系数的表达式。
2.
By applying the method of undetermined coefficients,this paper is devoted to finding a particular solution for a kind of systems of three-dimensional second-order differential equations with constant coefficients.
采用待定系数法,给出了非齐次项为n次一元多项式的三维二阶常系数线性微分方程组的特解公式,并通过举例验证了特解公式的正确性。
3.
By introducing, a new transformation and selecting appropriate trial functions,nonlinear partial differential equations can be converted to algebraic equations,and their related coefficients can be easily determined by making use of the method of undetermined coefficients.
通过引入一个变换和选准试探函数 ,进行求偏导数运算 ,将非线性偏微分方程化为代数方程 ,然后用待定系数法确定相应的常数 ,最后得到其解析解 。
5) perturbation coefficient awaiting determination
摄动待定系数
6) the method of undetermined coefficients
待定系数方法
1.
The Simpson s rule is generalized and a general rule is derived by using the method of undetermined coefficients.
给出了具有3次代数精度的条件,对辛甫生求积公式进行了推广,利用待定系数方法推导出了一般性的公式,并从该推广的方法导出了三点高斯公式。
补充资料：待定系数法
| 待定系数法 undetermined coefficients，method of 一种求未知数的方法。一般用法是，设某一多项式的全部或部分系数为未知数，利用两个多项式恒等时同类项系数相等的原理或其他已知条件确定这些系数，从而得到待求的值。例如，将已知多项式分解因式，可以设某些因式的系数为未知数，利用恒等的条件，求出这些未知数。求经过某些点的圆锥曲线方程也可以用待定系数法。从更广泛的意义上说，待定系数法是将某个解析式的一些常数看作未知数，利用已知条件确定这些未知数，使问题得到解决的方法。求函数的表达式，把一个有理分式分解成几个简单分式的和，求微分方程的级数形式的解等，都可用这种方法。 |
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参考词条