题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026003936-88658.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026003936-59440.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026003936-40054.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026003937-45180.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026003937-58814.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026003937-27512.png)
解析
试题分析:根据题意,由于
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026003936-88658.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026003936-59440.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026003937-44395.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026003936-40054.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026003937-45180.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026003937-58814.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026003938-93664.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026003937-27512.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026003937-27512.png)
点评:解决的关键是对于向量的坐标关系得到参数a,b,c的关系式,结合定义来得到,属于基础题。
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026003932-88192.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026003922-27139.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026003923-34479.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026003923-18116.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026003923-26873.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026003924-13563.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026003924-66781.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026003924-63355.jpg)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026003924-42092.jpg)
(1)求直线
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026003925-26639.png)
(2)求直线
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026003925-26639.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026003925-92948.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026003925-86832.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026003917-78502.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026003917-96577.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026003903-26713.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026003903-21803.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026003903-35159.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026003903-62228.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026003903-43841.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026003904-12783.png)
(Ⅰ)求椭圆
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026003904-24764.png)
(Ⅱ)若
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026003904-21223.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026003904-76676.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026003904-23924.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026003904-98312.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026003904-37991.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026003856-69857.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026003856-50101.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026003856-92682.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026003856-67298.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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