题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104012041-91024.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104012041-26543.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104012041-40820.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104012041-95386.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104012042-58453.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104012042-84097.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104012042-90247.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104012043-41517.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104012043-54410.png)
A.![]() | B.3 |
C.![]() | D.![]() |
答案
解析
试题分析:如图,因为
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104012041-91024.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104012041-26543.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104012041-40820.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104012041-95386.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104012044-43408.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104012044-31616.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104012044-63759.png)
所以,
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104012044-43756.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104012045-56685.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104012045-76798.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104012044-43756.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104012045-57446.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104012045-41950.png)
由
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104012046-53952.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104012046-65338.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104012045-41950.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104012046-57764.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104012046-45351.png)
核心考点
试题【已知=1,=,,点在内,且,,则等于( )A.B.3C.D.】;主要考察你对平面向量的基本定理及坐标表示等知识点的理解。[详细]
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104012033-33624.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104012033-58808.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104012033-33624.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104012034-56627.jpg)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104012025-31410.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104012025-12669.png)
(1)求
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104012025-31410.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104012025-31410.png)
(2)若N为AB中点,AM与CN交于点O,设
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104012025-31797.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104012026-91551.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104012019-41858.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104012019-54338.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104012019-84613.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104012019-18810.png)
A.1 | B.3 | C.5 | D.7 |
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104012006-46962.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104012006-78595.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104012006-62095.png)
(1)求线BD的中点M的坐标;
(2)若点P
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104012007-75397.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104012007-37142.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104012007-72043.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104012008-70929.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104011955-27401.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104011955-12079.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104011956-97691.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104011956-92519.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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