UC知道矢量问题求解
来源：百度知道 编辑：UC知道 时间：2024/06/18 06:56:21
ABCD is a parallelgram whose diagonal intersect at O.
Given that AB = p, BC = q, express OA + AD in terms of p and q.
Given that AB = p, BC = q, express OA + AD in terms of p and q.
ABCD是平行四边形，对角线交点在原点O。
所以AB=DC=p，BC=AD=q
OA=CA/2=(CD+CB)/2=-(p+q)/2
所以OA+AD=(q-p)/2
