Problem4

MIT的EECS学院本科新生入学第一门课程introduction_to_cs&programming的作业答案，也是学习python语言和计算机科学很好的资料。(Institute of MIT' s EECS undergraduate admission first course introduction_to_cs & programming operating the answer is to learn good python language and computer science information.)

不知道怎么弄的 你先给我开开吧 我急着用呢 好不好啊(SDAFSDFGSGQWRAEFSDFDSFGGSDF)

We programmed the correction equation of time in minutes per day pendants year

matlab中矢量控制模型，其中32变换可以用S函数来实现(matlab in vector control model, of which 32 can transform S function to realize)

说明：  可以用这份代码做粒子滤波，效果还行，这个是无迹的算法(This code can be used for particle filtering.)

设计了巴特沃斯、车比雪夫I，Ⅱ型、椭圆滤波器，并有对心电信号的低通处理。(Designed Butterworth, Chebyshev car I, Ⅱ type, Elliptic filters, as well as on the ECG of the low-pass deal.)

this is about DTFT.DTFT s matlab code and it is for Discrete time fourier transform.

基于matlab采用mpeg压缩原理，实现对avi格式文件的解压缩(Matlab mpeg compression used on principle, to realize the decompressor avi format)

通过matlab 程序，计算rainflow的值，验证疲劳载荷是否合格(rainflow ，load)

The mathematical basis is polynomial interpolation piecewise implemented