fft_learn

calculate the minimum perimeter

信号的FFT变换、经典功率谱分析和现代功率谱分析，周期图法、尤利沃克方法、burg方法、协方差和改进协方差方法(Signal FFT transform, the classic power spectrum analysis and modern power spectrum analysis and periodogram method, method of Julius walker, burg, covariance and the covariance improvement method)

关于有限元分析的可以使用的matlab代码，对于FEM编程可以节约不少时间。(Finite element analysis on the matlab code can be used, for FEM programming can save a lot of time.)

matlab switch lower(type) case uniform R=a+b*randn(M,N) case uniform R= a+(b - a)*rand(M,N( switch lower(type) case uniform R=a+b*randn(M,N) case uniform R= a+(b- a)*rand(M,N)

solar mppt algorithms fransferor finfind mamimum power t

matlab 画地图的 非常好用，有需要的可以拿过去！(very good！)

内有多本mathematica的电子书籍教程，可供数学建模使用。此种书籍查阅很方便(Contain a number of e-books of the mathematica tutorial for the use of mathematical modeling. Easy access to such books)

matlab在语音信号分析和合成中的应用(The application of matlab in speech signal analysis and synthesis)

MATLAB程序源码设计数值积分算法源码MATLAB source code design algorithm for numerical integration source(MATLAB source code design algorithm for numerical integration source MATLAB source code design algorithm for numerical integration source)

这是单自由度的非线性微分方程的求解程序（分段函数），可以画出动响应图和相图。(Nonlinear differential equation)