1 . 设
,
分别为椭圆
:
的左、右焦点,
为
内一点,
为
上任意一点.现有四个结论:
①
的焦距为2;
②
的长轴长可能为
;
③
的最大值为
;
④若
的最小值为3,则
.
其中所有正确结论的编号是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e6a1aec0051c955c487248a115276ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3c9708ef0dc6d6f5dcf6596d3e4f6e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4056761b8f826eeb6ad8c9a151d3c9c.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39387d3ab691f41564b304e66fb51b5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83666674f1111c699d7c5f7b792e0285.png)
④若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/076375ab6e3916d6377923051f65021c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
其中所有正确结论的编号是
您最近一年使用:0次
2020-05-16更新
|
852次组卷
|
4卷引用:2020届湖南省五岳高三下学期5月联考理科数学试题
2020届湖南省五岳高三下学期5月联考理科数学试题(已下线)第三章 圆锥曲线的方程(选拔卷)-【单元测试】2021-2022学年高二数学尖子生选拔卷(人教A版2019选择性必修第一册)黑龙江省大庆实验中学2021届高三得分训练(二)数学(文)试题(已下线)2.2 椭圆(提高练)-2021-2022学年高二数学同步训练精选新题汇编(人教A版选修2-1)
2 . 如图,矩形ABCD中,
,
,E,F,G,H分别是矩形四条边的中点,R,S,T是线段OF的四等分点,
,
,
是线段CF的四等分点,分别以HF,EG为x,y轴建立直角坐标系,设ER与
、ER与
分别交于
,
,ES与
、ES与
交于
,
,ET与
交于点N,则下列关于点
,
,
,
,N与两个椭圆:
:
,
:
的位置关系叙述正确的是
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/24/cb83c2b8-22eb-4f33-a37e-e4c4ffb94456.png?resizew=270)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54275b7e571660d0a9e0370fbfe5050b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07160f14b3b453bebb64cb2bf96dc85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39bbd217b46c20ecf533c0641ebb7ba4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/150a135bbd528daf3f19a58a621a57c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e01c77ea8aec0f14e3e6c37ed374cda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91493d8357a3e4c3d121d60bf11f1f91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de4b919c7403a0adc47e84228cbeba3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/172722d11ea7e01411fa06dbb82f46ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fbd49bf20f987c05b4d36e31549075c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd798d1a9250003951df0578a1f5a8ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de4b919c7403a0adc47e84228cbeba3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b104090ea2ac34be58a76a4e0e95cb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7df1d9b712b639c8b6809c9f3ae03706.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de4b919c7403a0adc47e84228cbeba3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/172722d11ea7e01411fa06dbb82f46ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fbd49bf20f987c05b4d36e31549075c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b104090ea2ac34be58a76a4e0e95cb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7df1d9b712b639c8b6809c9f3ae03706.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f82a5421934348a612982ca099723b63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d80a47fd46072cd717442cb378d431ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4455cb5ef8fa02f8740a01ea658ed7fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ef9793c30377986297f49e9a9e1c440.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/24/cb83c2b8-22eb-4f33-a37e-e4c4ffb94456.png?resizew=270)
A.三点![]() ![]() ![]() ![]() ![]() | B.![]() ![]() ![]() ![]() ![]() |
C.点![]() ![]() ![]() ![]() ![]() ![]() | D.![]() ![]() ![]() ![]() ![]() ![]() |
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