题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026012551-57400.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026012552-61362.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026012552-35752.png)
(Ⅰ)和直线
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026012552-60066.png)
(Ⅱ)在
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026012552-56283.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026012552-87319.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026012553-23309.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026012553-73019.png)
解析
试题分析:解:由
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026012553-55256.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026012553-36888.png)
(Ⅰ)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026012554-40648.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026012552-35752.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026012554-71728.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026012554-86633.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026012552-35752.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026012554-57927.png)
则直线
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026012552-35752.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026012553-23309.png)
(Ⅱ)当直线
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026012552-35752.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026012552-35752.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026012554-35466.png)
当直线
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026012552-35752.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026012552-35752.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026012555-92398.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026012554-40648.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026012552-35752.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026012553-36888.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026012554-86633.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026012555-86064.png)
则直线
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026012552-35752.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026012553-73019.png)
点评:求直线的方程是高中课程学习中最基本的要求。
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026012548-40943.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026012548-40943.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026012544-13322.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026012544-22973.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026012534-10129.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026012535-16313.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026012535-12453.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026012519-20733.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026012519-38536.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026012519-26628.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026012519-91003.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026012519-51311.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026012519-26628.png)
(1)求椭圆
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026012519-51311.png)
(2)设
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026012520-65643.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026012519-51311.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026012520-22326.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026012520-65643.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026012520-11099.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026012520-22326.png)
(i)若
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026012520-16867.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026012521-30087.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026012521-19661.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026012519-51311.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026012520-11099.png)
(ii)若
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026012520-11099.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026012520-22326.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026012519-51311.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026012521-98217.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191026/20191026012514-28436.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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