Description: 把微分方程的一维经典初值问题的有限插分法：Euler法、改进的Euler法、Admas二步外插法、Admas二步内插法编写成通用子程序，并且利用这些通用子程序解决常微分方程的数值解。-The classical one-dimensional differential equations initial value problem of limited interpolation method: Euler method, improved Euler method, Admas outside the two-step interpolation, Admas two-step interpolation method into a general-purpose subroutine to prepare and use it to solve common subroutines Numerical Solution of Ordinary Differential Equations. Platform: |
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Author:mengxiang |
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Description: 数值解法
例1 用改进的欧拉方法求一阶方程初值问题的
数值解
例2 数学摆的运动方程与近似方程数值解比较
例3 四阶龙格库塔公式求数值解
Matlab实现求数值解
例1 求初值问题y =x*sin(x)-y,y(0)=0的数值
解.先编辑一个定义方程的ODEF函数文件
ODEfun1.m.
例2 求方程组初值问题的数值解,按指定步长
0.05划分节点.
例3 按指定的精度求高阶方程初值问题的数值解.-Numerical Solution of the law a method of using the improved Euler' s equation of order to a first-order initial value problem of the numerical solution of cases of two mathematical pendulum equations of motion compared with the approximate numerical solutions of equations of three cases of fourth-order Runge-Kutta numerical solution of the formula Matlab order to achieve the numerical solution of demand cases seeking an initial value problem y ' = x* sin (x)-y, y (0) = 0 the numerical solution. first, the definition of an equation editor ODEF function file ODEfun1.m. cases of two demand equations initial value problem of numerical solution, according to the specified division of the node step 0.05. Example 3 according to the specified precision of seeking higher-order equation of the numerical solution of initial value problem. Platform: |
Size: 4096 |
Author:率一 |
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Description: 本程序是关于常微分方程初值问题数值解的欧拉算法及线性多步法的matlab代码，对初学者有帮助，例题用的李荣华的微分方程数值解法第一章的习题-This program is about Euler algorithm for numerical initial value problem of ordinary differential equations and linear multistep method matlab code, useful for beginners, examples of Li Ronghua s numerical solution of differential equations of the first chapter exercises
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Size: 3072 |
Author:谢涛 |
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Description: 解微分方程的欧拉法,龙格-库塔法及其 MATLAB 简单 实例欧拉方法(Euler method)用以对给定初值的常微分方程(即初值问题)求解 分为前进 EULER 法、后退 EULER 法-Solution of differential equations of Euler, Runge- Kutta method and MATLAB simple example Euler (Euler method) for a given initial value ordinary differential equations (ie initial value problem) into forward EULER solving method, Back EULER France Platform: |
Size: 1024 |
Author:harmanhe |
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Description: 本例为四种求解Blasius平板边界层方程的数值计算方案，欧拉法，改性欧拉法，二阶龙格库塔法和四阶龙格库塔法。为了满足无渗透边界条件，f 位于eta=0处的初值在不同方法下需要进行一定的调整。-This folder contains the matlab programs to solve the Blasius equation for boundary layer of flat plate. There are four numerical methods to solve this problem. Euler, modified Euler, RK-2 and RK-4. In order to satisfy the no-penetration condition, d.h. f =1 @ eta--> infinity, the initial value of f @ eta = 0 should be debug in different methods. Platform: |
Size: 3072 |
Author:马晨皓 |
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