1 . 已知椭圆
的下焦点为
,
与短轴的两个端点构成正三角形,以
(坐标原点)为圆心,
长为半径的圆与直线
相切.
(1)求椭圆
的方程;
(2)设点
为直线
上任意一点,过点
作与直线
垂直的直线
,
交椭圆
于
两点,
的中点为
,求证:
三点共线.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/281c9349efe55d0db7395761fe9dc08e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cad4595d5352b2884568a59d8d766a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73e0f7f6d4b14813f18aa16caca7dbd9.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3481ecc58fb0c27daf08f7735c48d8eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb26d84907c923278ac4626a9d58947.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e52586ca2a3b783bc8092415e2d4bf6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea52bf7f8fd9b8c250482db53bdf0705.png)
您最近一年使用:0次
2019-05-23更新
|
413次组卷
|
2卷引用:【市级联考】湖北省黄冈市2019届高三2月联考数学(文)试题
名校
2 . 如图,已知椭圆
焦距为2,F为椭圆C的右焦点,A(-a,0),![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1bf568503d7b4906d1066dd61048693.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/20/286c1e46-6e62-43fb-9dba-9af57d08184f.png?resizew=172)
(1)求椭圆C的方程;
(2)设O为原点,P为椭圆C上一点,AP的中点为M,直线OM与直线
交于点D,过O且平行于AP的直线与直线
求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b475cfce3dc46b2632bc1d171c980489.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1bf568503d7b4906d1066dd61048693.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/20/286c1e46-6e62-43fb-9dba-9af57d08184f.png?resizew=172)
(1)求椭圆C的方程;
(2)设O为原点,P为椭圆C上一点,AP的中点为M,直线OM与直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f23d29646155e27b172ecdf263e2d702.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5672ebf6960bbf8b171582e1a7dd0ce1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96dda41b6dee37e043fac54bfda5d9da.png)
您最近一年使用:0次
3 . 已知椭圆
的左右焦点分别为
,其焦距为
,点
在椭圆
上,
,直线
的斜率为
(
为半焦距)·
(1)求椭圆
的方程;
(2)设圆
的切线
交椭圆
于
两点(
为坐标原点),求证:
;
(3)在(2)的条件下,求
的最大值
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5379ca02a94af1e74e5e00e38ba6e327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a649229b6afa314d5cb7d9a66115734.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94f4faed99e8f7100584d50eedea8c1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9ecc3aaae2aa289591a3b632f1e0645.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52b33328faae2d2d4921900e97424de5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22b2fe2eaadae4df6247a131a1cddb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3825ccc273ef9a672a606432d165b866.png)
(3)在(2)的条件下,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff24c95fe581befd56c3bcc70e88b726.png)
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2019-03-26更新
|
453次组卷
|
3卷引用:【市级联考】湖北省八市(黄石市.仙桃市.天门市.潜江市.随州市.鄂州市.咸宁市.黄冈市)2019届高三3月联合考试理科数学试题
4 . 已知O为坐标原点,椭圆C:
的左、右焦点分别为
,
,右顶点为A,上顶点为B,若
,
,
成等比数列,椭圆C上的点到焦点
的距离的最大值为
.
求椭圆C的标准方程;
过该椭圆的右焦点
作倾角为
的直线与椭圆交于M,N两点,求
的内切圆的半径.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00df4f17848c072b51e80d427d486e31.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a09a8ac969e5cec3be6abf4ff44c692e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce6758b8b074d33ea9e82818593656e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d81bbfb3029de7228939db48d325c305.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e96722ac4606bc95149cf6fcca3b3e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/526253844494fed86429e1390505e0db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce6758b8b074d33ea9e82818593656e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26e3d2d5bb85f2a81c8ac15231ea8a13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4141b26d2c32655003494a91ad6331b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65863c1abad833b79c303bfca24f535c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce6758b8b074d33ea9e82818593656e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01b899be3c4709ec661d84392b167230.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a73996441623e15a377808faf876af0.png)
您最近一年使用:0次
5 . 已知椭圆
的左、右焦点为
,离心率为
,点
在椭圆
上,且
的面积的最大值为
.
(1)求椭圆
的方程;
(2)已知直线
与椭圆
交于不同的两点
,若在
轴上存在点
,使得
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a9df1061c3ba5151ba2f7359acaf356.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)已知直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb8c5f1958fed328502749045ddd8539.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6568bad036eba6ca51d3cbb0871d11f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daa1a179296ff2814019b5ed87711c24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
解题方法
6 . 已知椭圆
的离心率为
分别为椭圆的左、右焦点,点
在椭圆上,当
时,
内切圆的半径为
.
(1)求椭圆
的方程;
(2)已知直线
与椭圆
相较于
两点,且
,当直线
的斜率之和为2时,问:点
到直线
的距离是否存在最大值?若存在,求出最大值;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/968bc863acdb4f2b0cba33157363e711.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21be2ded88ff31124782ca069bb9a0d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fc5c19ac440746be97d8b46af5d288a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da0bd0c0d318cc6cb8e2a1c56c463f19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb643c6a6a0f51f7ec36ddc48c9d3184.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdc8b1e617e5d5f0944ee8732cc0f6df.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce1132157a33c82610c2d5035493d024.png)
(2)已知直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc42211598a3c7bd950637fd583c562.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce1132157a33c82610c2d5035493d024.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9161449c34c8d98279d552f366a7d365.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39106a2c5eb1e8aee4a4ec2679e755a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54376db7072ef81e31d6be71760d4e71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fc5c19ac440746be97d8b46af5d288a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a159de0b2d9eb1ae0b7e664e64d3c6c.png)
您最近一年使用:0次
7 . 如图,椭圆
经过点P(1,
),离心率e=
,直线l的方程为x=4.
![](https://img.xkw.com/dksih/QBM/2014/5/22/1578311980425216/1578311980900352/STEM/d694e106-3234-4db0-8a79-afcf3d66b45c.png?resizew=351)
(1)求椭圆C的方程;
(2)AB是经过右焦点F的任一弦(不经过点P),设直线AB与直线l相交于点M,记PA,PB,PM的斜率分别为
.问:是否存在常数λ,使得
?若存在,求λ的值;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd72321801f7ce55ed0330289dd7c577.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a4c67b52fb0b1da181eb90652eb326f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e244c12208e7c6a01e3580d1ae9d7544.png)
![](https://img.xkw.com/dksih/QBM/2014/5/22/1578311980425216/1578311980900352/STEM/d694e106-3234-4db0-8a79-afcf3d66b45c.png?resizew=351)
(1)求椭圆C的方程;
(2)AB是经过右焦点F的任一弦(不经过点P),设直线AB与直线l相交于点M,记PA,PB,PM的斜率分别为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dca1726d463bd741c904abd9b6589056.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25efc5cbd13da39d4124af4963c95315.png)
您最近一年使用:0次
2019-01-30更新
|
6829次组卷
|
34卷引用:湖北省天门中学2022届高三下学期适应性考试(二)数学试题
湖北省天门中学2022届高三下学期适应性考试(二)数学试题2015-2016学年湖北省襄阳市白水高中高二下3月月考理科数学试卷广西柳州高级中学、南宁市第二中学2018届高三上学期第二次联考数学(文)试题1广西柳州高级中学、南宁市第二中学2018届高三上学期第二次联考数学(文)试题2广西柳州高级中学、南宁市第二中学2018届高三上学期第二次联考数学(理)试题1广西柳州高级中学、南宁市第二中学2018届高三上学期第二次联考数学(理)试题2天津市红桥区2020届高考二模数学试题西藏拉萨市2021届高三一模数学(理)试题安徽省滁州市定远县育才学校2021届高三下学期最后一模理科数学试题重庆一中2021届高三高考数学押题卷试题(二)2013年普通高等学校招生全国统一考试理科数学(江西卷)2014-2015学年山东省枣庄市九中高二上学期期末考试理科数学试卷2016届贵州省贵阳一中高三上学期第三次月考理科数学试卷2015-2016学年湖南省湘阴县一中高二上学期期中理科数学试卷2015-2016学年辽宁省实验中学分校高二上学期期末理科数学试卷2016届湖南省常德一中高三第十一次月考理科数学试卷2015-2016学年贵州遵义一中高二下联考理科数学试卷2015-2016学年辽宁葫芦岛一中等校高二6月联考文数学卷2015-2016学年贵州遵义一中高二下联考文科数学试卷江苏省兴化一中2017届高三下学期期中考试数学试题(已下线)2017-2018学年第一学期期末复习备考之精准复习模拟题高二江苏版数学试题(B卷)(已下线)黄金30题系列 高三年级数学(文) 大题易丢分(已下线)专题18 圆锥曲线(解答题)-2020年高考数学母题题源解密(天津专版)广西南宁三中2019-2020学年下学期高二期末考试(普通班)理科数学试题广西南宁三中2019-2020学年下学期高二期末考试(普通班)文科数学试题广东省中山市华侨中学港澳台班2019-2020学年高二上学期期末数学试题天津市和平区耀华嘉诚国际中学2021-2022学年高二上学期期中数学试题(已下线)第39讲 斜率和积问题与定点定值问题-2022年新高考数学二轮专题突破精练(已下线)第44讲 解析几何中的极点极线问题-2022年新高考数学二轮专题突破精练(已下线)专题24 圆锥曲线中的存在性、探索性问题 微点2 圆锥曲线中的探索性问题山东省临沂市临沂第一中学2022-2023学年高二上学期期末数学试题四川省宜宾市叙州区第二中学校2022-2023学年高三上学期期末考试数学(理)试题重庆市第八中学校2024届高三上学期暑期测试数学试题(已下线)第三章 圆锥曲线的方程(压轴必刷30题7种题型专项训练)-【满分全攻略】2023-2024学年高二数学同步讲义全优学案(人教A版2019选择性必修第一册)
名校
8 . 已知椭圆
:
的左顶点为
,上顶点为
,直线
与直线
垂直,垂足为
点,且点
是线段
的中点.
![](https://img.xkw.com/dksih/QBM/2018/3/15/1902898666676224/1903549086728192/STEM/092d5e8c-8665-4151-9053-57601cf98523.png?resizew=206)
(I)求椭圆
的方程;
(II)如图,若直线
:
与椭圆
交于
,
两点,点
在椭圆
上,且四边形
为平行四边形,求证:四边形
的面积
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f82eb4ba631d0f50d848aa6e576b379.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e66f7c9dfa8db27834a28d4b039c8e2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e5c62f22d7afc5627fcb86599faa8e1.png)
![](https://img.xkw.com/dksih/QBM/2018/3/15/1902898666676224/1903549086728192/STEM/092d5e8c-8665-4151-9053-57601cf98523.png?resizew=206)
(I)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(II)如图,若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15b256345d7109e081b7c895591e995d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1709dcdc54b39f1306b92a6306177d8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1709dcdc54b39f1306b92a6306177d8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
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2018-03-16更新
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湖北七市(州)教研协作体2018年3月高三联考考试理科数学试卷(已下线)2018年高考数学备考中等生百日捷进提升系列(综合提升篇) 专题05 解析几何解答题【全国百强校】安徽省蚌埠市第二中学2018届高三4月月考数学(理)试题
9 . 有一个动圆与曲线M:
相内切,并且与x轴相切.
(Ⅰ)求动圆的圆心的轨迹N的轨迹方程;
(Ⅱ)已知点
的坐标为(-2,0),如果直线
与椭圆
交于点C, 直线
与曲线N交于点B,D.求当斜率
满足什么范围时,存在这样的椭圆使得
的长度成等比数列.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91b7c4507c051ea7b9459ed29faa336f.png)
(Ⅰ)求动圆的圆心的轨迹N的轨迹方程;
(Ⅱ)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be77ec1a6509ec69b94af7c7b0cbc97b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94752acb1abb015f22ed6918feeff75f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be77ec1a6509ec69b94af7c7b0cbc97b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f92e8ab07104c7c3784f8d67b4c6040.png)
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10 . 已知椭圆E:
经过点P(2,1),且离心率为
.
(Ⅰ)求椭圆的标准方程;
(Ⅱ)设O为坐标原点,在椭圆短轴上有两点M,N满足
,直线PM、PN分别交椭圆于A,B.探求直线AB是否过定点,如果经过定点请求出定点的坐标,如果不经过定点,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
(Ⅰ)求椭圆的标准方程;
(Ⅱ)设O为坐标原点,在椭圆短轴上有两点M,N满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fda5074aed825b10dec7a23c65292dff.png)
您最近一年使用:0次
2017-11-15更新
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2193次组卷
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