secant-method-in-nonlinear-ode

excel和matlab混和编程exlink实现回归与模拟,还有几个插值运算小程序(excel and Matlab programming exlink mixture to achieve reunification with the simulation, Operational several small interpolation procedures)

用来求光纤的材料色散，并画出其材料色散曲线。(material dispersion)

说明：  线弹性断裂相场法，1.0.1版本，后续更新！！(elastic fracture phase field elastic fracture phase field)

说明：  针对给定信号采用不同的经典功率谱估计方法进行信号的谱估计，性能不错！(For a given signal using different classical power spectrum estimation methods for signal spectrum estimation, performance, good!)

数学实验中用matlab完成的仿真实验，应用matlab的很多仿真功能(Mathematics experiment with matlab simulation experiments completed, many of the matlab simulation function)

说明：  有限单元法，彭细荣，包含matlab源代码，可以通过其运行，学习。(matlab data source about finite element method。 )

该文件包含spwm的单极性和双极性MATLAB smulink仿真，可以正确运行，载波与调制波波形清晰完美。由本人原创搭建。(This file contains the SPWM unipolar and bipolar MATLAB smulink simulation which can run correctly, carrier and modulation wave forms are perfect.)

本代码实现了人工鱼群算法（ASFA.m）,并用该算法寻找Sphere函数的极小值(This is a ASFA .)

elliptical propagation model

已知三基准点和原点，通过未知点、基准点与原点距离，未知点与基准点距离，求未知点坐标(Known three reference points and the origin, through unknown point, the reference point and the origin of the distance from the unknown point and the reference point, find the coordinates of the unknown point)