差商

词组短语

difference quotient · difference coefficient

与差商相关的网络例句 [注：此内容来源于网络，仅供参考]

In Chapter 2, one kind of rational cubic spline interpolation with linear denominator has been proposed, whose derivatives are replaced with accurate derivative values, difference quotient and arithmetic average difference quotientrespectively.

第二章给出了一类分母为线性的有理三次插值函数，当其导数值分别取为导数的精确值，一阶差商，以及算术均差商时，便得到三种插值格式，分别为给定导数值的有理三次插值函数，基于函数值的有理三次插值函数，以及基于算数均差商的有理三次插值函数。

Equidistance point and difference theory in theory of function approximation are studied. Meanwhile, the relation among difference, difference quotient and derivate is revealed. By drawing Lagrange's and Cauchy's theorem of mean on difference and Taylor's formula into difference function, four theorems, such as Lagrange's theorem of mean on difference, are concluded in simple way. On the basis of these conclusions, the asymptotic property of middle point is studied, a series of new conclusions are drawn and the discussions on the asymptotic property of middle point in differential mid-value are summarized.

对函数逼近论中等距节点和差分理论进行了研究，揭示了差分、差商与导数之间的联系；将Lagrange中值定理、Cauchy中值定理、Taylor公式引入到差分函数中，简明地推导出Lagrange差分中值定理等4个定理，并在此基础上对"中间点"的渐近性进行了研究，得出了一系列"中间点"的渐近性的结果，概括了有关文献对微分中值公式的"中间点"的渐近性的讨论；给出的引理改进了函数逼近论的证明方法，精简了函数逼近论中的一些内容。

Douglas and Russell first presented the idea of characteristics in[13],in whichthe diffusion term is included in the derivative of characteristic direction of the solu-tion and the backward difference quotient along the time axis was replaced by it alongcharacteristic direction.

Douglas，Russell[13]最先提出了特征法的思想，其主要特点是将模型方程的对流项隐含在解沿特征方向的导数之中，以沿特征方向的向后差商逼近取代通常方法中沿时间方向的向后差商逼近。

The method replaces the grads in gradient method with difference quotient and can be used to many cases.

然后根据此界的特点，提出了基于差商的参数优化算法，用差商代替导数的计算，具有较大的适用范围。

Contributions of shaping variables and sizing variables of frame structure to objective function are measured in the concept of a relative difference quotient method.

利用相对差商的概念，将框架结构形状变量和截面尺寸变量统一考虑，根据两类变量的相对差商值确定优化搜索的方向。

Reduce the computing complexity of magnetic field integral equation with differential quotient, which makes the computing which combined field integral equation more efficiently.

在AIM算法的实现技术方面作了两个改进：一是采用了新的多极子展开方案，保证了迭代的数值稳定性；二是在差商逼近偏导数的过程中全部采用二阶形式，保证了差商逼近偏导数的精度。

Then,the second part is the basic facts about the numerical divided differenceand divided difference expansions, Then discussed the error bounds for the remainder term in Floater s divided difference expansions, and offers an pu...

第二部分是数值差商公式的基本概念，以及差商展开的思想；用初等的方法讨论了Floater中差商展开式的余项估计，|R_p|≤k~/k！

In Chapter 4, using Newton series, we obtain a divided differences formula of composite functions, and give a matrix equivalent form of these composite functions. Moreover, we derive a divided differences for the reciprocal series.

第四章利用形式Newton级数得到了复合函数的差商公式，并给出复合函数的一个矩阵等价形式，从而得到一个反级数的差商公式。

Equidistance point and difference theory in theory of function approximation are studied. Meanwhile, the relation among difference, difference quotient and derivate is revealed. By drawing Lagrange's and Cauchy's theorem of mean on difference and Taylor's formula into difference function, four theorems, such as Lagrange's theorem of mean on difference, are concluded in simple way. On the basis of these conclusions, the asymptotic property of middle point is studied, a series of new conclusions are drawn and the discussions on the asymptotic property of middle point in differential mid-value are summarized.

对函数逼近论中等距节点和差分理论进行了研究，揭示了差分、差商与导数之间的联系；将Lagrange中值定理、Cauchy中值定理、Taylor公式引入到差分函数中，简明地推导出Lagrange差分中值定理等4个定理，并在此基础上对&中间点&的渐近性进行了研究，得出了一系列&中间点&的渐近性的结果，概括了有关文献对微分中值公式的&中间点&的渐近性的讨论；给出的引理改进了函数逼近论的证明方法，精简了函数逼近论中的一些内容。

On the Commerce of new and used equipment on the market of more than one, the industry is saying there is of the view that to compete in the open, but also of the view that 1973, however, we all admit that passive ' rationalised and commerce market continues to be seriously affected.

差商轮阛阓上陈不陈摆设的撤离比，业界说法各一有觉得五五闭，也有觉得七三闭，但不小家都认可二手商轮不曾而且还是是商轮阛阓重不小的感化气力。

与差商相关的网络解释 [注：此内容来源于网络，仅供参考]

arithmetic average difference quotient：算术均差商

分数次差商:Fractional difference quotient | 算术均差商:arithmetic average difference quotient | 共振瑞利散射:resonance Rayleigh scattering

backward difference quotient：后向差商

backward difference operator 后向差分算子 | backward difference quotient 后向差商 | backward solution 后向解法

forward difference operator：前向差分算子

forward difference 前向差分 | forward difference operator 前向差分算子 | forward difference quotient 前向差商

difference quotient：差商

Diagonal Matrix 对角矩阵 | Difference Quotient 差商 | Dilation 扩张

forward difference quotient：前向差商

forward difference operator 前向差分算子 | forward difference quotient 前向差商 | forward solution 前向解法

Fractional difference quotient：分数次差商

部分各向异性:Fractional anisotropy | 分数次差商:Fractional difference quotient | 分数傅里叶变换:fractional Fourier transform

reciprocal difference quotient：倒差商

倒差分|reciprocal difference | 倒差商|reciprocal difference quotient | 倒易蒙特卡罗方法|reciprocity Monte Carlo method

divided difference：差商

diversion channel 引水渠 | divided difference 差商 | division of wavefront 波前区分

Extremal quotient object：极端商对象

极端商对象:Extremal quotient object | 偏离-份额法:Departure-Quotient method | 分数次差商:Fractional difference quotient

reciprocal difference：倒差分

刀切法|jackknife | 倒差分|reciprocal difference | 倒差商|reciprocal difference quotient