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使用matlab调试C文件，mex相关操作。附带说明和源程序。(This code use matlab to debug the code which is writed by c.)

说明：  Matlab中文参考手册，可以作为函数的说明(Matlab Manual in Chinese)

输入一个一维行向量，输出一个以此为首行元素的实对阵矩阵。如：输入a=[4 9 5 3 6],再输入A=symm(a)(Enter a one-dimensional row vector, generate a symmetry matrix )

1、观察采样引起的混叠。 2、判别离散时间系统的时不变性。 3、利用卷积计算信号通过FIR滤波器的输出，并观察输出信号的input-on暂态、input-off暂态和稳态阶段。 (One to observe the sampling due to aliasing. 2, determine the time invariant discrete-time systems. 3, the use of convolution calculation of the signal through the FIR filter output, and observe the output signal of the input-on transient, input-off transient and steady-state phase.)

webcam connection in matlab

用粒子群算法实现的求函数最小值，代码简捷明了，适合刚接触粒子群算法的朋友(Minimum demand function with particle swarm algorithm, the code is simple and clear, for the fourth year Particle Swarm friends)

an example of using matrix to solve S parameter

基于粒子群算法的pid控制，MATLAB仿真(Based on Particle Swarm Optimization pid control, MATLAB simulation)

矩阵的LU分解、QR分解、Jordan约当标准型.matlab实现(LU decomposition of the matrix, QR decomposition, Jordan Jordan canonical form. Matlab)

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