点积、叉积、行列式
摘要:
http://www.cnblogs.com/ysjxw/archive/2008/07/21/1247708.html转自http://www.cppblog.com/shiming413/archive/2007/08/21/30494.html一、点。l 点的坐标A(x1, y1),B(x2,... 阅读全文
posted @ 2014-09-12 22:34 ukouryou 阅读(2883) 评论(0) 推荐(0) 编辑