arrow3.m.tar

有加减乘除和括号运算功能的计算器，还可以算三角函数(calculator including plus，minus,mutiply,add)

第二类Fredholm积分方程的数值解。 所谓积分方程就是积分号内有未知函数的方程(Second numerical solution of Fredholm integral equation)

随机微分方程求解的一个很好的参考资料，算是比较基础的，深入浅出(Stochastic differential equations of a good reference, as a relatively basic, easy to understand)

数值方法的5个重要的算法： 1.[Dirich.m] 求解拉普拉斯方程的狄利克雷方法. 用于偏微分方程的数值解 2.[Hamming.m] 汉明方法是用来修正微分方程的多步预测。 3. [Milne.m] 米尔恩 - 辛普森差分方程求解方法，用于预测校正方法。 4. [Rkf45.m]龙格 - 库塔 - 沃尔伯格错误控制和步骤的方法求解微分方程的近似解 5.[Romber.m]著名的龙贝格积分源代码。计算结果存在并显示为下三角矩阵。(Numerical Methods in five of the more important algorithms: 1. [Dirich.m] to solve the Laplace equation Dirichlet method for the numerical solution of partial differential equations 2.[Hamming.m] Hamming method is the multistep forecast corrected differential equations. 3. [Milne.m] the Milne- Simpson method as a differential equation solver used forecast correction method. 4. [Rkf45.m] Runge- Kutta- Wahlberg error control and step method for solving differential equations approximate solution 5. [Romber.m] the famous Romberg integral source code numerical integration, the presence of computable results show a lower triangular matrix.)

说明：  用matlab实现的有限元工具箱，有平面空间梁单元，杆单元，实体单元等。(achieved using Matlab Toolbox FEM, graphic space beam elements, rod elements, entities modules.)

电磁计算用的快速多级子算法，欢迎大家下载交流(Fast multilevel sub algorithm for electromagnetic computation)

本程序是用节点导纳矩阵计算三相短路电流 输入数据--形成节点阻抗矩阵--选择故障点---计算短路电流----计算个节点电压---计算指定支路的电流(this procedure is used node admittance matrix calculation of three-phase short-circuit current input data-- forming node impedance matrix-- election Optional fault--- calculation of short-circuit current-voltage computing nodes designated calculated slip road--- Electricity)

说明：  多元线性回归的C++源码，在VC6.0上可直接运行！(Multiple Linear Regression C++ source code, can be directly run in VC6.0!)

用无网格法计算VAN DE POL 振子(calculate van de pol oscillator by using meshless method)

多元GARCH的Matlab程序，用于计算GRACH(y,p,q)(Multivariate GARCH in Matlab)