名校
1 . 设
,
,向量
,
,且
,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95cccdff49c3efe6e7a7dbbf69db9319.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/640b8aa7d0c77d575853de8b03063eb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/175a77e0bb734ac3b9ab2a78b7a14709.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31fb8eceac2b1124c88e55782404decb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b88584cf1df43e28d03592c7998b1653.png)
A.5 | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
2 . 已知
,且
,则x=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36452c068da93131870738d354065f48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66d76ee2e81f447f84a3e0b39c0388ef.png)
A.5 | B.4 | C.-4 | D.-5 |
您最近一年使用:0次
2018-08-16更新
|
520次组卷
|
3卷引用:天津市河西区2018-2019学年高二上学期期末数学试题
名校
3 . 在空间直角坐标系中,已知点
,
,
,若
、
、
三点共线,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edff1881635893293dd411ead8194aca.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bce7f3658bd6c1294df92b939dc1cde6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53dfb8d7de16d48b0a68dcd4900bd475.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96897547afcfef14aea08ef176e895ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edff1881635893293dd411ead8194aca.png)
您最近一年使用:0次
2018-01-20更新
|
943次组卷
|
7卷引用:天津市河东区2019-2020学年高二上学期期末数学试题