LM_method

求解四元三次方程组，通过在VC++的编程环境，实现计算的高速运行(Solving four yuan cubic equations by VC++ programming environment, to achieve high-speed operation calculated)

牛顿法测试程序，包含线搜索和不含线搜索时算法比较。(newton algorithm with linear and without linear search.)

光滑粒子（SPH）模拟couette流动，代码是根据刘桂荣老师《光滑粒子流体动力学-一种无网格方法》书后的代码改编，较实用，请需要的下载(Smoothed Particle (SPH) simulation couette flow, the code is based on Liu Guirong teacher " smoothed particle hydrodynamics- a non-grid method" Code adaptation of the book, more practical, please download required)

经典矩阵运算问题求解(classic problem solving matrix operations)

该程序用fortran90编写，时域有限差分（FDTD)中的分裂场方法。解决了斜入射情况下周期结构的电磁散射问题。(FORTRAN90 prepared with the program, finite difference time domain (FDTD) method of splitting the market. Solved the case of oblique incidence of electromagnetic scattering from periodic structure issues.)

计算机算法设计与分析(第3版)课后答案-王晓东版_打印版,整本书的课后习题答案，包括算法实现题也有。(The also Computer Algorithm Design and Analysis (3rd Edition) afterschool Answer- Wang Xiaodong _ print edition, the book Homework answer, including algorithms title.)

说明：  基于matlab实现的拉格朗日插值函数，牛顿插值函数代码。(Based on MATLAB Lagrange interpolation function, Newton interpolation function code)

使用Matlab编程，对教材74页例3.3.1进行编程仿真。其中，正电压A的值、噪声方差值、每个码元周期内的采样点数N自行设定（可设置为可调的变量）。噪声值可使用Matlab中产生高斯随机数的函数来进行仿真。贝叶斯检测判决式中，先验概率P(H1)=P(H0)，判断错误的代价因子设为1，判断正确的代价因子设为0. 按照上述参数的设定进行仿真，实现对仿真数据的贝叶斯检测判决；循环生成仿真数据，并进行判决结果的统计，即记录判决正确的次数，估计正确判决的概率。(The use of Matlab programming, teaching materials 74 pages of 3.3.1 programming simulation. Among them, the value of positive voltage A, the variance of noise, the number of sampling points in each symbol cycle (N) can be set by itself (adjustable variable). Noise values can be simulated using the function of generating Gauss random numbers in Matlab. In the Bias detection decision, the prior probability P (H1) =P (H0), the factor of error judgment is set to 1, and the correct cost factor is set to 0. According to the simulation parameters and realize the judgment of Bayesian detection simulation data; generating cycle simulation data, statistics and decision, which records the correct number of judgment, the estimated probability of correct decision.)

说明：  用Doolittle式的LU分解来求解线性方程组。(Solve the linear equations using Doolittle LU Decomposition!)

矩阵,复数自定义数据类型的C++实现,矩阵求逆采用牛顿法,(The matrix, complex number custom data type C realization, the matrix inverse uses the Newton method,)