题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104054323-80462.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104054323-23632.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104054324-37507.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104054324-98033.png)
A.![]() | B.![]() | C.4 | D.2 |
答案
解析
试题分析:因为
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104054323-23632.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104054324-37507.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104054323-23632.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104054324-37507.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104054325-19194.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104054324-98033.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104054325-62035.png)
点评:熟记向量垂直的条件:设
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104054325-14476.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104054325-83172.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104054326-75238.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104054326-21366.png)
核心考点
试题【已知向量,若与垂直,则( )A.B.C.4D.2】;主要考察你对平面向量数量积的意义等知识点的理解。[详细]
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104054311-62002.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104054311-32766.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104054311-98176.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104054312-13032.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104054311-98176.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104054311-32766.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104054312-31596.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104054311-32766.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104054311-98176.png)
A.![]() | B.![]() | C.![]() | D.![]() ![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104054301-25964.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104054302-75584.png)
(1)求
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104054302-69113.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104054302-57666.png)
(2)若
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104054302-79191.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104054303-26575.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104054303-43675.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104054303-91088.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104054303-29357.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104054254-42790.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104054254-46142.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104054254-15113.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104054255-41246.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104054249-22370.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104054249-28827.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104054249-51430.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104054250-43660.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104054250-29651.png)
A.![]() | B.![]() | C.![]() | D.1 |
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104054241-34751.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104054241-61846.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104054242-81195.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104054242-41445.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104054242-30309.png)
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