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某家电企业在全国二线城市的年销售量Y(单位：万台)与该城市人口数X1(单位:万人)以及该市人均月收入X2(单位:元)之间的关系，在某年对15个城市作了调查，得上述各量的观测值（见数据表data1.txt）(A household electrical appliance enterprises in the country in sales of second-tier cities, Y (unit: million units) and the urban population, the number of X1 (unit: million) and the city' s per capita monthly income X2 (unit: yuan) between, in a particular year made a survey of 15 cities, was the amount of the above observations (see data sheet data1.txt))

说明：  图像及其预测误差图像78维特征提取，用于图像识别(Image Its prediction error image 78 dimensional feature extraction)

Block base DCT data hiding and recovery of secrete image.

说明：  2008国际大学生数学建模一等奖论文，数学建模实例与编程教程，提供建模的方法(First Prize Paper on Mathematical Modeling for International College Students 2008, Mathematical Modeling Example and Programming Course, Providing Modeling Method)

用于车辆弯道避障的仿真试验，本文件包含主程序和两个函数(Obstacle avoidance for vehicle turn simulation test, books document the main program, in addition to the two functions)

印刷偶极子天线的设计与调试 印刷偶极子天线的设计与调试(印刷偶极子天线的设计与调试)

MATLAB的梯度法源程序，按照提示输入，可直接运行(MATLAB source code of the gradient method, in accordance with the prompt input, can be directly run)

说明：  随机序列 实现随机序列 Random sequence (Random sequence )

利用单带滤波器来设计一个半带滤波器，并显示半带滤波器H0,H1,及 H0+H1的幅频响应单带滤波器的归一化截止频率为0.84,长度＝16，半带滤波器的长度＝31。(Single-band filter design using a half-band filter, and display the half-band filter H0, H1, and H0 H1 magnitude response of the single-band filter normalized cutoff frequency of 0.84, the length of = 16, half-band filter length = 31.)

用matlab编写一维光子晶体的透射，是有关矩阵的，能推广到多层(The transmission of one-dimensional photonic crystal using matlab, is about the matrix, can be extended to multi-storey)