题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104065424-22270.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104065424-59162.png)
A.![]() | B.![]() | C.![]() | D.6 |
答案
解析
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104065425-87288.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104065426-50749.png)
点评:此题为向量秋末基本题型,基础题.
核心考点
试题【已知,则为: ( )A.B.C.D.6】;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/20191104/20191104065418-42549.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104065418-24291.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104065418-35217.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104065419-47170.png)
A.![]() | B.![]() ![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104065411-84054.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104065411-35640.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104065411-54049.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104065411-54049.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104065405-80031.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104065405-17821.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104065405-35261.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104065405-39982.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104065405-54526.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104065355-82831.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104065356-43274.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104065356-40648.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104065356-59271.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104065356-11093.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104065357-88811.gif)
(1)求
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104065357-40238.gif)
(2)当
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104065357-84183.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104065357-40238.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104065357-85547.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104065349-78647.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104065349-11206.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104065349-66166.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104065350-41130.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104065350-60317.png)
A 4 B 8 C 0 D 2
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