已知平行六面体ABCD-A'B'C'D',化简下列表达式:(1)向量AB+向量BB'-向量D'A+向量D'D-向量BC(2)向量AC'-向量AC+向量AD-向量AA'

问题描述:

已知平行六面体ABCD-A'B'C'D',化简下列表达式:(1)向量AB+向量BB'-向量D'A+向量D'D-向量BC
(2)向量AC'-向量AC+向量AD-向量AA'

1.向量AB'(向量AB+向量BB'为向量AB',-向量D'A+向量D'D为向量AD.)
2.向量AD(-向量AC+向量AD为向量CD)