求解圆周率pai的经典程序

7. 求矢量夹角余弦 8. 求线段之间的夹角 9. 判断线段是否相交10.判断线段是否相交但不交在端点处 11.求线段所在直线的方程 12.求直线的斜率 13.求直线的倾斜角14.求点关于某直线的对称点15.判断两条直线是否相交及求直线交点16.判断线段是否相交，如果相交返回交点-7. For vector cosine angle 8. For the angle between the line 9. Line judge whether the intersection 10. Line judge whether the intersection but do not pay the endpoint Office 11. For the straight line segment where equation 12. For a linear slope 13. Seeking straight tilt angle 14. For a certain point on a linear symmetrical 15 points. to judge whether the intersection of two straight and for 16 straight intersection. Line judge whether the intersection, the intersection to intersection

资源描述基于Gabor+pca识别人脸表情 ，很详细，用opencv实现的  对于学习pca算法的初学者很有用。

异常通常被称为运行时错误。这些都是由程序员使用的尝试，抓住，把关键词。

要求出一个矩阵的逆矩阵有许多方法，这里介绍以 Gauss-Jordan Elimination 来求出逆矩阵的方法，算法函数用C++写成，可在C++编程环境下直接调用-requested a matrix inverse matrix there are many ways here to introduce the Gauss-Jordan Elimination get to the inverse matrix method, the algorithm functions with C languages, the C programming environment called directly

里面是源代码 能够刷新掉程序非正常关闭时在任务栏托盘留下的图标  

多种编解码的小程序，支持binhex，binc array，url和utf7即base64-various codecs of small programs to support binlt;- Gt; Hex, binlt;- Gt; C array, url and utf7 that base64

概率论与数理统计中的F分布函数，有了它，可以免去查教科书附表的繁琐-probability theory and mathematical statistics of the distribution function F, With it, check the textbook can avoid the cumbersome Schedule

字符串分解程序，用VB编写。把一个长字符串分解成若干小的字符串-string decomposition process, the preparation of VB. Put a long string divided into several small string

插值、拟合与规划问题 插值、拟合与规划问题-Interpolation, fitting with the planning of interpolation, fitting and planning issues

利用两点距离计算经纬度的matlab程序，欢迎交流。-use latitude and longitude distance calculation procedures of Matlab, welcomed the exchange.