题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104015340-90689.png)
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⑴求证: A、B、D三点共线. ⑵试确定实数k,使ke1+e2和e1+ke2共线.
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104015341-63679.png)
解析
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104015341-44900.png)
(2)根据向量ke1+e2和e1+ke2共线,可知
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104015341-76088.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104015342-49061.png)
核心考点
试题【(10分)设两个非零向量e1、e2不共线.如果=e1+e2,2e1+8e2,="3(e1-e2)" ⑴求证: A、B、D三点共线. ⑵试确定实数k,使】;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/20191104/20191104015335-17947.png)
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![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104015323-61553.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104015324-56653.png)
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![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104015314-99369.png)
(1)求点C的轨迹方程;(2)设点C的轨迹与双曲线
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104015314-81656.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104015314-65354.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104015305-53062.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104015305-49816.png)
A.
![](http://img.shitiku.com.cn/uploads/allimg/20191104/20191104015306-92670.png)
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