已知向量
,
,且
,则实数m的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd72350eb5e2ee4f1dffcd0697ea9fc2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f93b3d4871d6e550524e5c17313aad9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa5aa846a5b7c96fe2ce665eb1ea5f0e.png)
A.![]() | B.1 | C.3 | D.9 |
更新时间:2020-03-13 15:53:33
|
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单选题
|
容易
(0.94)
真题
解题方法
【推荐1】已知向量
,
,则
的充要条件是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4de360086e43c7a4e9072eeee13ed072.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/783c4278864f850dc5b59d073a692f34.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa5aa846a5b7c96fe2ce665eb1ea5f0e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
单选题
|
容易
(0.94)
解题方法
【推荐2】已知向量
,
,则
与
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28fd5a8f1ad3efefd18811c1ca7ff8ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4df52c8ef377e2ac78da6d34375bada3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
A.平行且同向 | B.平行且反向 |
C.垂直 | D.不垂直也不平行 |
您最近一年使用:0次