> 数学 >
如图,已知
OA
OB
是不共线向量,
AP
=t
AB
(t∈R),试用
OA
OB
表示
OP

人气:278 ℃ 时间:2019-10-17 04:50:39
解答
OP
=
OA
+
AP
=
OA
+t
AB

=
OA
+t(
OB
-
OA
)=(1-t)
OA
+t
OB
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