nonlinear

本程序是用五点差分格式解拉普拉斯方程，采用MATLAB作为开发环境，拉普拉斯方程有广泛的应用，五点差分格式的精度高 (This procedure is a five-point difference scheme for solution of Laplace equation, using MATLAB as a development environment, Laplace equation has a wide range of applications, a five-point difference schemes of high accuracy)

说明：  有关LBP的的五个小程序，希望对研究该领域的人有所帮助(Related LBP of the five small programs, I hope to research in the field who help)

pdg.m:在多项式矩阵中，将矩阵元素对角化。pdiv.m：计算多项式矩阵除法(pdg.m: polynomial matrix, the matrix elements diagonalization. pdiv.m: computing polynomial matrix division)

实现对wav文件的FFT，拟合波形和识别DTMF，具体功能键实验报告(Wav files to achieve the FFT, waveform and fitting recognition DTMF, the specific function key test report)

关于FFT的一个例子，Short time FFT with octave smooth by Matthes(An example of FFT on, Short time FFT with octave smoothby Matthes)

matlab利用符号工具箱进行解析函数求导演示的编程源码及示例图片(matlab symbolic toolbox analytic function to ask the director to show programming source code and sample pictures)

基于BP_Adaboost的强分类器设计——公司财务预警建模(Design of strong classifier based on BP_Adaboost: modeling of corporate financial early-warning)

klaman滤波算法的matlab编程,主要用于gps定位,具有非常好的参考价值,运行通过(klaman filtering algorithm Matlab programming, mainly for the gps positioning, very good value, running through)

交换网络中节点的连边,保持网络总度数不变(Exchange randomly node link with total degree numbers unchange. )

对正弦波进行FFT（快速傅立叶变换）得到幅频谱图，均方根谱图，功率谱图，对数谱图，并进行IFFT恢复出正弦波。(FFT and IFFT)