task2

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)

电力系统的短路计算过程繁琐工作量大，采用计算机编程计算不但省去了繁琐的人工计算，而且精确度高。我选用matlab作为编程语言，因为Matlab对处理数组有着其它编程语言所无法比拟的优越性。此外matlab中的GUI界面直观简单，而且制作过程并不复杂。(power system short-circuit the cumbersome process of calculating workload, calculated using computer programs not only save a cumbersome manual calculation, and high precision. I use Matlab as a programming language, because Matlab have to deal with an array of other programming languages are incomparable superiority. In addition Matlab the GUI interface is very intuitive and simple, but the production process is not complicated.)

有个ldpc码的介绍，很全面，很好，适合于初学者(A introduction abuat LDPC codes , very comprehensive, very good, and suitable for beginners)

LAST one sample file

运用matlab/simulink创建一单机无穷大电力系统暂态稳定性分析(Transient stabilty analysis of one-machine infinite bus power system)

水印嵌入算法，可实现彩色水印的嵌入，很有用的(Watermark embedding algorithm, the watermark can be embedded in color, very useful)

a simulation of electric motor

该程序使用matlab模拟出心电图信号。(The program uses matlab simulate the ECG signal.)

y = pca(mixedsig) 联合开发网 - pudn.com

matlab常用函数查询，编程很有用的东西。(matlab commonly used functions query)