题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105021442-32111.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105021443-94434.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105021443-73129.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105021443-38335.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105021443-53397.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105021444-14302.png)
解析
试题分析:将向量
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105021444-14648.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105021444-74020.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105021444-46711.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105021445-13176.png)
点评:熟练掌握向量的坐标运算是解决此类问题的关键,属基础题
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105021436-81989.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105021436-58516.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105021436-53602.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105021436-38457.png)
若
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105021436-55097.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105021436-73266.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105021437-52968.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105021430-23013.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105021430-93485.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105021430-19329.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105021430-41024.png)
A.![]() | B.2 | C.1 | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105021423-89341.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105021423-31640.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105021424-39258.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105021424-69382.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105021424-45629.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105021424-29185.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105021417-79033.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105021417-53642.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105021418-61584.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105021417-79033.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105021417-53642.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105021417-53642.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105021417-79033.png)
为 .
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105021412-79639.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191105/20191105021412-28443.png)
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