题文
如图,平行四边形ABCD的两条对角线相交于点M,点P是MD的中点.若
=2,

=1,且

BAD=60o,则

。

题型:未知 难度:其他题型
答案

解析

,由已知:

,


,

考点
据考高分专家说,试题“如图,平行四边形ABCD的两条对角线相交.....”主要考查你对 [向量数量积的含义及几何意义 ]考点的理解。
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