题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233502-16498.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233503-75302.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233503-73218.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233503-70222.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233504-21374.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233504-46257.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233504-52481.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233505-84608.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233502-16498.png)
(1)求椭圆
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233502-16498.png)
(2)当
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233504-52481.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233505-72435.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233505-43499.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233505-66258.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233503-70222.png)
(3)试问
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233505-43499.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233505-84608.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233504-52481.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233506-59313.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233506-62652.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233506-25924.png)
解析
试题分析:(1)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233506-90176.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233507-23621.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233507-82464.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233506-59313.png)
(2)当
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233507-96158.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233508-97759.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233508-15131.png)
于是当
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233504-52481.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233505-72435.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233508-22714.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233509-95535.png)
得到
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233506-62652.png)
(3)①当
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233504-52481.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233505-72435.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233506-25924.png)
②当
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233509-38349.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233509-75873.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233509-34738.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233510-69798.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233510-66293.png)
联立椭圆方程有
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233510-57025.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233510-89963.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233511-56826.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233505-43499.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233511-83337.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233511-96461.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233512-32129.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233512-56556.png)
得
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233506-25924.png)
综上,
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233506-25924.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233505-84608.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233504-52481.png)
点评:椭圆中
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233512-66683.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233512-43503.png)
核心考点
试题【椭圆:的右焦点为且为常数,离心率为,过焦点、倾斜角为的直线交椭圆与M,N两点,(1)求椭圆的标准方程;(2)当=时,=,求实数的值;(3)试问的值是否与直线的倾】;主要考察你对曲线与方程的应用等知识点的理解。[详细]
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233458-48345.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233458-20919.png)
①曲线
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233458-48345.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233459-79452.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233458-48345.png)
③若曲线
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233458-48345.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233459-81886.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233459-60848.png)
④若曲线
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233458-48345.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233500-53623.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233500-99907.png)
其中所有正确命题的序号为__ _ __ .
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233448-88481.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233448-97251.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233448-54984.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233449-36148.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233449-69617.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233449-30150.png)
(1)求椭圆C以及圆O的方程;
(2)当点
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233449-48957.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233450-13304.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233438-24426.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233439-10368.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233439-84148.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233439-13186.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233439-87756.png)
A.![]() | B.![]() | C.![]() | D.![]() |
A.![]() | B.(0,![]() | C.![]() | D.(0,![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233426-68190.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233427-78237.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233427-31259.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191025/20191025233427-84404.png)
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