搜索资源列表
r_K
- 用四阶(定步长)龙格--库塔法求解初值问题，其中一阶微分方程未y =f(x,y)-with four bands (fixed step) Runge -- Kutta method to solve initial value problems, not an order differential equation y = f (x, y)
eulerpro
- 用改进的欧拉方法求解初值问题，其中一阶微分方程未y =f(x,y)-Improved Euler method to solve initial value problems, not an order differential equation y = f (x, y)
ART2
- CT重建算法，迭代算法ARTII，乘型ART算法，该算法法比初始值选择不能为0-CT reconstruction algorithm, iterative algorithm ARTII, x-ART algorithm, The algorithm method than the initial value of options can not be 0
eulerany
- Euler方法解 程序，使之适用于任意右端函数f,任意步长h和任意区间[to,T]。用h=1/4,1/8,1/16分别计算初值问题 -Euler method Solutions program, which applies to arbitrary subguadratic function f, arbitrary step h and arbitrary interval [to T]. With h = 1 / 4, 1 / 8, 1 / 16 were calculat
rk
- 用四阶古典RK方法解初值问题： 取h=1/8。每隔8步打印出数值解与真解的值（u(t)=(t^2)/2-t），画出它们的大致图像，并对产生的结果做出解释。 -with four bands classical RK method for initial value problems : from h = 1 / 8. Every eight-step numerical solution print and in the true value (u (t) = (t ^ 2) /
RGKT3
- 用c语言编程，定步长基尔法求解一阶常微分方程，给定一阶常微分方程的初值问题。-with c programming language, will step Kiel method of first-order differential equations, given an order ordinary differential equation initial value problems.
updatesimplexmethod
- 单纯形法是一种不错的随机搜索算法，但是其受初始值的选取，步长大小的影响较大，容易陷入局部收敛。程序中列出了基本单纯形法，和几种改进的单纯形法，包括变步长的单纯形法，单纯形加遗传算法等。-simplex method is a good random search algorithm, but its initial value by the selection, step in a larger size, easy to be trapped into local convergence. P
EULERDemo
- /* * EULER S ALGORITHM 5.1 * * TO APPROXIMATE THE SOLUTION OF THE INITIAL VALUE PROBLEM: * Y = F(T,Y), A<=T<=B, Y(A) = ALPHA, * AT N+1 EQUALLY SPACED POINTS IN THE INTERVAL [A,B]. * * INPUT: ENDPOINTS A,B INITIAL CONDITION ALPHA I
wyl_shuzhisuanfa
- 算法包括:1.二分法求解 2.牛顿法求解 3.高斯消去法求解 4.雅可比迭代法求解 5.拉格朗日插值 6.牛顿插值 7.最小二乘法拟合 8.龙贝格方法计算积分 9.欧拉方法求解初值问题-algorithms include : 1. Solving two dichotomy. Newton method 3. Gaussian elimination method 4. Jacobi iterative method 5. Lagrange interpolation 6 value. New
testEKF
- EKF的效果需要有test来测验。test中给定了初值来验证EKF的滤波效果-EKF the test results need to test. Test were given to verify the initial value of the filtering effect of the EKF
NnuericalMethodsforPDE
- 本程序功能为计算一阶双曲型偏微分方程的初值问题,分别采用3种格式计算：1、迎风格式 2、Lax-Friedrichs格式 3、Lax-Wendroff格式-function of the procedures for calculating an order hyperbolic partial differential equation initial value problems were used to calculate three formats : 1, 2 upwind, the
LONGE
- 计算方法常微分初值问题-ordinary differential calculation initial value problems
zhong
- 系统聚类算法K-means 属于聚类分析中一种基本的划分方法，常采用误差平方和准则函数作为聚类准则，该算法在处理大数据集时是相对可伸缩且高效率的，同时具有潜在的数据并行性。但是这种算法依赖于初始值的选择以及数据的输入顺序；此外，当运用误差平方和准则函数测度聚类效果时，如果各簇的形状和大小差别很大，为使误差平方和 Jc 值达到最小有可能出现将大的聚类簇分割的现象。-system clustering algorithm K-means cluster analysis is a basic met
快带弦截法
- 本程序所求解的方程为x-cosx=0的解，程序将f(x)定义为子函数过程f(x)，并把初值赋给相应变量后，即可使用xj(a,b,n)调用快带弦截法子函数。-the procedure for solving the equation x-cosx = 0 solution procedures to f (x) is defined as the process of Functions f (x), and initial value assigned to the corresponding
movingAveragePredict
- /** * @author jakcy_wu(wujichun) * * 预测分析--本算法只适用于受周期变化或者波动影响的数据 * 权值移动平均算法 * 本期預測值=（前期值*權數）求和/n * * 默认权值为{1,1,1},取最近3次的平均 * 注意权值和必须=权值集合.length */-/ ** * @ author jakcy_wu (wujichun) * * Forecast and Analysis -- This algorithm applies only to the af
logistic
- 给定初始值，产生费根鲍姆迭代轨迹，logistics映射，周期点等程序-Given initial value, resulting in iterative trajectory Feigenbaum, logistics map, periodic points and other procedures
Chapter6
- 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 S
determine-the-potential-value
- 一个二维静电场，电位函数为 ，边界条件如题图所示，将正方形场域分成20个正方形网格。有十六个内部网格点。假定16个网格点的初始值为0，试用超松弛法确定16个网格点的电位值。-A two-dimensional electrostatic field, potential function, boundary conditions such as the title shown below, the square field divided into 20 square grid. Sixteen
How-Use-ODE45-to-solve-Boundary-Value-ODE
- In MATLAB, usually we use function bvp4c() to solve boundary value problem (BVP) of ODE. However, we also can use function ode45() to solve BVP of ODE too. However, ode45() needs all initial values at one point. Therefore we have to construct an auxi
常微分方程的初值问题
- 常微分方程初值问题的matlab计算方法代码(The calculation method of initial value problem of ordinary differential equation)