FFT

求矩阵奇异分解svd算法，共计4种实现方式，(for SVD matrix decomposition algorithm, for a total of four kinds of achievement,)

包括牛顿法，阻尼牛顿法，变尺度算法，最速下降法的优化算法程序。(Newton' s method, damped Newton method, variable metric algorithm, the steepest descent method optimization algorithm.)

四杆桁架结构的有限元分析程序，在VS2008软件中使用C++语言编写，输入为四杆桁架结构的节点坐标，材料参数，边界条件，输出为各节点的应力和应变。(Four-bar truss structure finite element analysis program, the use of C++ written in VS2008 software, input node coordinate the four-bar truss structure, material parameters, boundary conditions, the output of the stress and strain of each node.)

一个计算器，实现加减乘除等，适合初学者学习，代码很全，自己写的。(A calculator to realize, Math, etc., suitable for beginners to learn, the code is all that he wrote.)

说明：  数值分析 显示算法 非线弹性 滞回曲线(Numerical analysis showed that the algorithm the linear elastic hysteresis curve)

这是数值计算当中最小二乘法的例子，在matlab中实现(This is the numerical calculations of the least squares method, for example to achieve Matlab)

传播算子DOA估计算法和基于增广矩阵束的L型阵列的二维DOA估计MATLAB程序(Propagator DOA estimation algorithm based on the L-shaped array augmented matrix beam D DOA estimation MATLAB program)

WRF模拟结果气象要素的检验对比，包含均方根误差，偏差和相关系数等(WRF simulation test results comparing meteorological elements, including the root mean square error, deviations and correlation coefficients)

最小二乘拟合空间直线，和单独的误差计算函数(Linear least squares fitting space, and a separate error calculation function)

求解一维热传导方程，格式包括FTCS、BTCS、CNCS三种差分格式(solve one dimension heat transfer equation. )