Mr.zhou

三重积，又称混合积，是三个向量相乘的结果。向量空间中，有两种方法将三个向量相乘，得到三重积，分别称作标量三重积和向量三重积。 三向量共面的充要条件是混合积等于0 #include<iostream> using namespace std; //混合积模板 struct point { double x, y, z; point operator - (...

#include<iostream> using namespace std; struct Lpoint {double x,y;}; //点 struct Llineseg{ Lpoint a,b;}; //线段 double xmulti(Lpoint p1,Lpoint p2,Lpoint p0)//叉乘 { return ((p1.x-p0.x)*(p2.y-p0...

You can Solve a Geometry Problem too Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 12425    Accepted Submission(s): 6103   Problem Descript...