基本解释：n阶导数
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Regarding the primitive function as a derivative of-1th order,the author defines a general expression for derivative of n th order,which is called "invariant expression of derivative of n th order".把原函数看成是-1阶的导数,定义了一类n阶导数通式,称为不变n阶式。
In this paper,Some kinds of new equations of Euler’s type are pro- vided,which extends more consummately the integrable types in the references in two aspects,the factor exponent and the derivative order of unknown function contained in the equations.本文提供了几类新的Ｅｕｌｅｒｒ型方程，从方程所含因子指数和未知函数的导数阶数两个方面较完善地扩充了可积类型。
Methods:First derivative spectrometry was established.方法:采用一阶导数分光光度法,测定波长为275nm和317nm。
The review covers the developments in the field of dual-wavelength and multiorder derivative spectrophotometry in the analysis of precious metals during the period from January 1990 to December 2001 at the home and abroad.评述 1 990～ 2 0 0 1年国内外有关双波长和多阶导数分光光度法在贵金属分析中的应用。
A class of stiffly stable k-step second derivative methods of order k+2;一类k步k+2阶的二阶导数方法
The infrared diffuse reflectance spectra of PP pellets and powder were directly determined, and then pretreated through multiple scattering calibration ( MSC) , first derivatives ( number of spectrum to absorption of diffused reflection spectrum), second derivatives (number of spectrum to absorption of diffused reflectio.采用一阶导数、二阶导数、多元闪射校正(MSC)等方法进行光谱预处理,并用局部权重回归(LWR)和偏最小二乘法(PLS)建立平均相对分子质量(和)的校正模型。
The second derivative item is introduced to control diffusion along coherence orientation in coherence enhancing diffusion algorithm (CED).为了对原始光学相干层析图像进行预处理以有效地去除图像中的噪声及散斑、增强图中的层状结构,并更好地保护图像中的层状结构,进而更准确地定量测量图像中有重要意义的层状结构的光程信息,提出在相干增强各向异性扩散(CED)算法中引入二阶导数项以控制沿相干方向的扩散强度,并将引入二阶导数项的相干增强各向异性扩散算法应用于不同样品的光学相干层析图像。
Mermorphic functions concerning their n-th derivative sharing two values with weight亚纯函数及其n阶导数权分担两个值
Evaluating the Indefinite Integral Through the Invariance of Derivative of n th Order;用n阶导数的形式不变性求不定积分
Cauchy’s Integral Formulae for Derivatives of the n-th Order of Holomorphic Functions in H~p-space (p≥1);H~p(p≥1)空间中的全纯函数的n阶导数的Cauchy积分公式
I(X)-Reduced Representations of Graded Lie Algebra W(m;n) of Cartan Type;阶化Cartan型李代数W（m；n）的I（X）-诱导表示
Positive Solutions for(n-1,1) m-Point Boundary Value Problems With Dependence on the First Order Derivative依赖于一阶导数的(n-1,1)共轭m点边值问题正解的存在性
Subderivation Algebras of(n+1)-Dim n-Lie Algebras(n+1)-维n-Lie代数的次导子代数
Implement Solving Factorial of Big Integer N with C++;基于C++的求大整数N的阶乘的实现
The Integrability of the n-order Variable Coefficients Linear Ordinary Differential Equationn阶变系数线性常微分方程的可积性
Searching for First Integrals of the n-th Order Autonomous System Based on n-1 Single-Parameter Lie Groups用n-1个单参数李群求n阶自治系统的首次积分
Irreducible Representations of Graded Cartan Type Special Algebra S(m;n);阶化Cartan型特殊代数S（m;n）的不可约表示
Invariant and solution of nth-order Ordinary Differential Equation with Variable Coefficient;n阶变系数常微分方程的不变式及其求法
On Matrix Solution to Initial Value Problem of an N-th Order Linear Constant Coefficient Differential Equation;n阶线性常系数微分方程初值问题的矩阵解法
A Method to Solve Particular Solution for a Linear Differential Equation of Order n With Constant Coefficient;一类n阶常系数线性微分方程特解的求法
On Open Items of a_ns and Former n Ones and S_ns of K Steps Serveral of Equal Difference;关于 k 阶等差数列通项 a_n 及前 n 项和 S_n 的讨论
The method to solve particular solution for a class of n order constant coefficient nonhomogeneour diefferential equation;一类n阶常系数非齐次微分方程特解的计算
Green Function and Positive Solutions for Boundary Eigenvalue Problem of nth Order Difference Equationn阶差分方程特征边值问题的Green函数和正解
The Maximum Value of the Hosoya Indices of the Trees with Order n Niameter 3 or 4直径是3和4的n阶树的Hosoya指数的最大值
The derivative of the step is the impulse.阶梯的导数就是脉冲。
