题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104051656-86819.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104051657-37529.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104051657-23498.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104051657-51976.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104051658-14798.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104051658-67057.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104051658-75412.png)
解析
试题分析:
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104051658-36627.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104051659-94057.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104051659-21948.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104051659-10695.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104051659-50541.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104051700-30046.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104051700-38869.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104051657-23498.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104051700-91755.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104051658-75412.png)
点评:中档题,向量垂直的条件是,向量的数量积为0.。
核心考点
试题【在平面直角坐标系中,已知点和点,其中,若,求得值。】;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/20191104/20191104051650-24229.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104051651-28337.png)
(1)求证:
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104051651-93392.png)
(2) 若
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104051651-43511.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104051651-84600.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104051651-48351.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104051651-90108.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104051644-30470.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104051645-46938.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104051645-34967.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104051645-41669.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104051646-29419.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104051639-97212.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104051639-99495.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104051639-88197.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104051639-19574.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104051640-78355.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104051640-88203.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104051640-86965.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104051640-14816.png)
A.1个 | B.2个 | C.3个 | D.4个 |
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104051634-11737.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104051634-12044.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104051629-55077.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104051629-13074.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104051629-55249.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104051630-68640.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104051629-13074.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104051630-68640.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104051629-55077.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104051630-68640.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104051629-55249.png)
(1)求
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104051629-13074.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104051629-55249.png)
(2)求
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104051629-55249.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104051629-55077.png)
(3)求λ1和λ2,使
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104051629-55249.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104051629-55077.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104051629-13074.png)
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