向量叉積計算法

http://blog.youkuaiyun.com/fengbingchun/article/details/5871320

如果向量A為{a, b, c}，向量B為{m, n, p}，如何計算向量A與向量B的叉積呢？

 

用行列式：

             |i    j   k|

             |a   b   c|

             |m  n   p|         

             =(bp-cn)i + (mc-pa)j + (an-bm)k

 

例如用matlab實現兩個向量的叉積：

                                           a = [1 2 3]; 
                                           b = [4 5 6];
                                           c = cross(a,b)

                                           c =  -3     6    -3