题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023135346-25300.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023135346-85972.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023135346-13128.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023135346-21486.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023135347-48240.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023135347-91914.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023135346-25300.png)
A.![]() | B.![]() | C.![]() | D.![]() |
答案
解析
试题分析:设椭圆的长半轴长为
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023135348-99888.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023135348-62264.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023135349-40280.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023135349-90939.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023135349-70701.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023135349-18248.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023135350-66722.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023135350-14016.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023135350-33751.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023135350-75711.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023135347-91914.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023135351-51817.png)
∴
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023135351-95285.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023135351-39220.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023135351-69796.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023135333-20498.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023135334-73831.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023135334-35143.png)
(1)求椭圆
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023135333-20498.png)
(2)若椭圆
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023135333-20498.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023135334-24644.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023135334-24644.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023135320-55840.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023135320-31674.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023135321-78015.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023135321-52820.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023135321-74653.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023135320-31674.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023135321-17072.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023135322-28484.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023135322-41501.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023135322-17918.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023135322-44354.png)
(1)求
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023135322-13188.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023135320-31674.png)
(2)设动点
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023135323-29706.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023135323-50078.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023135320-31674.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023135323-84582.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023135323-78161.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023135324-92830.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023135307-55591.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023135308-37175.jpg)
(1)求椭圆E的方程;
(2)在椭圆E上是否存点Q,使得
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023135308-17327.png)
(3)过椭圆E上异于其顶点的任一点P,作
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023135308-21704.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023135308-90817.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023135253-15619.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023135253-70658.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023135253-23965.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023135254-74664.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023135254-26825.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023135254-67188.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023135254-86077.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023135254-55471.png)
(1)求椭圆
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023135254-26825.png)
(2)求
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023135255-98752.png)
(3)若
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023135254-86077.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023135255-71571.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023135255-34788.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023135255-76047.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023135240-35591.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023135241-19554.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023135241-36775.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023135241-43450.png)
(1)求椭圆的方程;
(2)若C、D分别是椭圆长轴的左、右端点,动点M满足
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023135241-62816.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023135242-44072.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023135242-28641.png)
(3)在(2)的条件下,试问
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023135242-43783.png)
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