题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034410-51116.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034410-90618.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034410-81034.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034411-79122.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034411-47513.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034411-22576.png)
解析
试题分析:设
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034411-15596.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034411-67680.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034411-97617.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034412-41899.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034411-67680.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034412-76600.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034412-85572.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034412-70720.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034412-86519.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034412-76600.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034413-28305.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034411-47513.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034410-81034.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034411-47513.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034413-80157.png)
试题解析:由题意,可设
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034411-15596.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034411-67680.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034413-67841.png)
设
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034411-97617.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034412-41899.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034411-67680.png)
又
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034412-76600.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034412-85572.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034412-70720.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034412-86519.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034412-76600.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034413-28305.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034411-47513.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034413-53054.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034414-91425.png)
核心考点
试题【已知坐标平面内O为坐标原点,P是线段OM上一个动点.当取最小值时,求的坐标,并求的值.】;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/20191104/20191104034400-15714.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034400-72028.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034400-34373.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034401-20126.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034401-62579.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034401-92973.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034401-87476.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034352-43382.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034352-64916.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034353-22321.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034352-43382.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034352-64916.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034353-22321.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034352-43382.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034352-43382.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034352-64916.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034342-41045.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034343-63833.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034343-28069.png)
A.![]() | B.![]() | C.![]() | D.![]() |
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104034328-50088.png)
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