题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023212435-64904.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023212435-94826.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023212435-67868.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023212435-77668.gif)
A.![]() | B.![]() | C.![]() | D.![]() |
答案
解析
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023212437-49868.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023212437-96044.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023212437-79147.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023212438-44771.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023212438-27653.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023212438-70154.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023212438-22333.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023212439-94008.gif)
(方法二)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023212435-67868.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023212435-77668.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023212439-38477.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023212439-48028.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023212439-65071.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023212438-44771.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023212438-27653.gif)
核心考点
试题【设AB是椭圆()的长轴,若把AB100等分,过每个分点作AB的垂线,交椭圆的上半部分于P1、P2、…、P99 ,F1为椭圆的左焦点,则+…的值是 】;主要考察你对椭圆的定义与方程等知识点的理解。[详细]
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023212420-85259.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023212421-44205.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023212421-27474.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023212421-48744.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023212421-79808.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023212414-75132.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023212414-14749.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023212414-40389.gif)
A. 4 | B. 64 | C. 20 | D.不确定 |
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023212356-20172.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023212356-91754.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023212356-74310.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023212357-11814.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023212356-74310.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023212357-97185.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023212357-62361.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023212357-84686.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023212357-14509.gif)
(1)求椭圆的离心率
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023212358-47824.gif)
(2)设椭圆的短半轴长为
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023212358-26436.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023212356-74310.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023212358-42411.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023212358-39590.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023212358-39590.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023212359-75817.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023212359-79968.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023212359-37455.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023212359-23815.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023212359-79968.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023212356-74310.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023212400-66364.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023212352-51723.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023212352-43929.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023212352-51723.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023212353-31398.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023212352-51723.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023212353-86107.gif)
A
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023212353-34769.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023212353-46327.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023212353-48678.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023212354-42343.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023212346-95268.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023212346-30941.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023212346-85610.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023212346-59674.jpg)
A (1, +∞) B
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023212347-95030.gif)
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023212347-74427.gif)
D
![](http://img.shitiku.com.cn/uploads/allimg/20191023/20191023212347-35418.gif)
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