1 . 设
,则
等于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6dbfc0e643163035f901f988ac8ed5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/644f8f9cc6000b283ee7414580801864.png)
A.(3,4) | B.(1,2) | C.-7 | D.3 |
您最近一年使用:0次
2017-08-06更新
|
433次组卷
|
2卷引用:广西陆川县中学2016-2017学年高一下学期期末考试数学试题
13-14高一下·内蒙古包头·期末
2 . 已知向量
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4b4f82a3820bf1b9737620935ef2d13.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23bdc0ce4bca80e27b8c8f176a638622.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8eddbbab37f208b0cbbd5caa08840490.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4b4f82a3820bf1b9737620935ef2d13.png)
您最近一年使用:0次