题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152506-36149.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152506-75903.png)
答案
解析
试题分析:因为,方程
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152506-36149.png)
所以,
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152506-78877.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152506-75903.png)
点评:简单题,利用椭圆的几何性质,建立m的不等式组。
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152456-59832.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152456-71748.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152456-90413.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152457-57620.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152456-59832.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152457-47671.png)
(1)求椭圆
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152456-59832.png)
(2)求弦
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152457-26421.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152447-55743.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152447-29997.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152447-59524.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152447-21993.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152448-14302.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152448-76623.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152448-68058.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152448-72291.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152449-96396.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152449-10027.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152449-76349.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152449-43323.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152449-43323.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152449-10027.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152449-47009.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152450-46988.png)
(Ⅰ)比较椭圆轨道Ⅰ与椭圆轨道Ⅱ的离心率的大小;
(Ⅱ)以
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152449-43323.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152435-39405.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152435-41206.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152435-81859.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152435-60845.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152435-41206.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152435-81859.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152435-45877.png)
(Ⅰ)求曲线
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152435-45877.png)
(Ⅱ)若点
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152436-37959.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152435-45877.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152436-64136.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152435-45877.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152421-72596.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152421-14612.png)
(Ⅰ)求椭圆C的方程和离心率e;
(Ⅱ)若点P为焦点F1关于直线
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152421-96501.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152422-67720.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152411-12123.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152411-56248.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152411-96681.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152411-48339.png)
(Ⅰ)求椭圆
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152411-12123.png)
(Ⅱ)设椭圆
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152411-12123.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152411-36591.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152411-68384.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152411-12123.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023152411-18574.png)
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