查询词典 second derivative

"Economic Mathematics" on the function of the limit, derivative and differential, derivative applications, indefinite integral, integral, integral and infinite binary Series and the first order differential equations, and so forth.

经济数学》介绍了函数、极限、导数与微分、导数的应用、不定积分、定积分、二元积分和无穷级数与一阶微分方程等内容。

Furthermore, in order to overcome the disadvantage of GMC, i.e., it can only apply to the processes with relative order of 1, based on Lie derivative, we propose to let the r th derivative of the process output follow the given reference trajectory, to get the control law expression through solving an optimization problem.

针对GMC方法只适于相对阶r为1的简单过程的缺点，采用Lie导数的概念，令过程输出的r阶导数的轨迹为事先设定的标称轨迹，通过解优化问题得到控制律表达式，把GMC方法推广至相对阶r大于1的复杂多输入多输出过程，从而提出了一种广义一般模型控制方法。

In chapter three, we study the uniqueness of meromorphic function and its derivative, and obtain the following result: There exists a set S with 6(4) elements such that any nonconstant meromorphic function f and its derivative f' satisfying E=E must be identical.

在第三章中，我们讨论了涉及导函数的唯一性问题，得到了下述结果：存在一个集合 S含有 6(4)元素，对于任意一个非常数亚纯函数f 及其导函数 f'，若 E=E，则f=f'。

And the further relation of these parameters is obtained by the transient response. Results show that the parameters of the PID control method for the system satisfy the following rules: the proportional parameter is larger than the derivative parameter, and the derivative parameter is larger than the integral parameter.

结果表明：为了满足数字电子气动式座舱压力变化速率和稳定性的要求，PID参数需满足一定的关系：在一定范围内，控制器的比例参数应大于微分参数，而微分参数应大于积分参数。

Based on a general parametric eigenstructure assignment result proposed for descriptor linear systems via proportional plus partial derivative state feedback and a result for generalized eigenvalue sensitivity problem of matrix pairs, parametric representation of the closed-loop eigenvalue sensitivities to the perturbed elements in the open-loop system matrices is obtained. An effective algorithm for eigenvalue assignment with minimum sensitivity in descriptor linear systems via proportional plus partial derivative state feedback is then proposed.

摘要基于广义线性系统比例与部分状态导数反馈参数化特征结构配置结果和矩阵对广义特征值灵敏度结果，得到了关于开环系统矩阵中摄动元素的闭环特征值灵敏度的参数表达式，并在此基础上提出了广义线性系统比例与部分状态导数反馈最小灵敏度特征值配置的有效算法。

And in the process of producing the concepts of the total derivative and the partial derivative are confused.

而且在整个推导过程中，对于全导数和偏导数的概念没有分清楚。

Its derivative at is called the partial derivative of with respect to at and is denoted by .

它在的导数叫做在关于的偏导数，记作。

A concept of partial derivative called pseudo-partial-derivative is used to dynamically linearize a nonlinear system, and an aggregation method is applied to deal with the future predictive PPD.

基于pseudo-partial-derivative的概念动态线性化非线性系统，利用集结方法处理未来预测时刻的PPD，实现了非线性系统的自适应预测函数控制。

A kinetics model for martensitic transformation is established based on the fact that the partial derivative of martensitic fraction with respect to temperature is in linear relationship with the partial derivative of free energy difference with respect to temperature.

基于马氏体体积分数对温度偏微分与自由能差对温度偏微分呈线性关系的事实，通过对实验曲线的模拟，提出一种新的马氏体相变动力学公式。

About the title of statistic of planar vector, probability, its solve problem process to permeating function form not only, and still permeating function thought; again criterion the tool that derivative is research function, had derivative, function content more appear profundity, rich and colorful.

有关平面向量、概率统计的题目，其解题过程不仅渗透着函数形式，而且还渗透着函数思想；再则导数是探究函数的工具，有了导数，函数内容就更显得深刻、丰富多彩。

Article 144 The Government of the Hong Kong Special Administrative Region shall maintain the policy previously practised in Hong Kong in respect of subventions for non-governmental organizations in fields such as education, medicine and health, culture, art, recreation, sports, social welfare and social

第一百四十四条香港特别行政区政府保持原在香港实行的对教育、医疗卫生、文化、艺术、康乐、体育、社会福利、社会工作等方面的民间团体机构的资助政策。原在香港各资助机构任职的人员均可根据原有制度继续受聘。

Small wonder, then, that the Chinese spend more in the shop than any other group of foreign visitors do .

这样的小惊喜，使中国顾客比任何国家的人消费得更多。