已知向量OM=(3-2),ON=(-5,-1),则1/2MN=_.
问题描述:
已知向量
=(3-2),OM
=(-5,-1),则ON
1 2
=______. MN
答
1 2
=MN
(1 2
-ON
)=OM
=(-4,(3,−2)−(−5,−1) 2
)1 2
故答案为(-4,
)1 2