名校
解题方法
1 . 已知
,
分别是椭圆![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a5bbb709522dba9425a6b45ee671298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
的左、右焦点,其焦距为
,过
的直线与
交于
,
两点,且
的周长是
.
(1)求
的方程;
(2)若
是
上的动点,从点
(
是坐标系原点)向圆
作两条切线,分别交
于
,
两点.已知直线
,
的斜率存在,并分别记为
,
.
(ⅰ)求证:
为定值;
(ⅱ)试问
是否为定值?若是,求出该值;若不是,请说明理由.
![](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/9a5bbb709522dba9425a6b45ee671298.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/6f8c4c029e552954bd493b49aeab82d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5eb2485f90dbfd0dfd6e7d179a856f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/354ec8391bdd39377804ee4dab1d8f1c.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3511cdc6a9b56bc1d9415d3d94ef0f67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6aec590da96a5469fc2fd6cef6164f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f0009063fe00277645aff1be6e32471.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
(ⅰ)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4757181824e15e0f21e5bdd55448783.png)
(ⅱ)试问
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5f6c5fd93aed88bec58002a20ea2e90.png)
您最近一年使用:0次
2020-06-05更新
|
826次组卷
|
3卷引用:江苏省扬中市第二高级中学2022届高三上学期期末考前热身数学试题
名校
2 . 已知抛物线
:
的准线经过点
,过
的焦点
作两条互相垂直的直线
,
,直线
与
交于
,
两点,直线
与
交于
,
两点,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7089148c36cb3c39af71de653756396a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bdcfc71b422a73d7110b17e57c0e161.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
A.![]() | B.![]() |
C.四边形![]() | D.若直线![]() ![]() |
您最近一年使用:0次
2020-05-31更新
|
808次组卷
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6卷引用:江苏省扬中市第二高级中学2022届高三上学期期末模拟数学试题
江苏省扬中市第二高级中学2022届高三上学期期末模拟数学试题2020届海南省天一大联考高三年级第四次模拟数学试题(已下线)专题9.6 直线与圆锥曲线(精练)-2021年新高考数学一轮复习学与练(已下线)“8+4+4”小题强化训练(51)圆锥曲线的综合问题(2)最值、范围问题-2022届高考数学一轮复习(江苏等新高考地区专用)湖南省株洲市第一中学2021届高三第三次模拟检测数学试题江苏省南京市江宁区东山外国语学校2020-2021学年高二(10月份)月考数学试题
名校
解题方法
3 . 若双曲线
的渐近线与圆
无交点,则
的离心率的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c5c2e64358e0ec7aa142c336d970306.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d26d3f9d8344e1c727fbbed5421daaa2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76426b7e71f15f6e801b00d1f72b1030.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2020-09-20更新
|
486次组卷
|
5卷引用:江苏省镇江市扬中市第二高级中学2022-2023学年高三上学期期末模拟数学试题
江苏省镇江市扬中市第二高级中学2022-2023学年高三上学期期末模拟数学试题【省级联考】甘肃省2019年高三第二次高考诊断考试理科数学试题江苏省泰州中学2020-2021学年高二上学期期初检测数学试题江苏省南京市秦淮中学2020-2021学年高二上学期第一次段考数学试题(已下线)第三章 圆锥曲线与方程(知识归纳+题型突破)-2023-2024学年高二数学单元速记·巧练(苏教版2019选择性必修第一册)
名校
4 . 在平面直角坐标系
中,椭圆E:
(
)的长轴长为4,左准线l的方程为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/23/e575d02c-657e-469a-9eb1-3fe51654a2e0.png?resizew=211)
(1)求椭圆的标准方程;
(2)直线
过椭圆E的左焦点
,且与椭圆E交于A,B两点.
①若
,求直线
的方程;
②过A作左准线l的垂线,垂足为
,点
,求证:
,B,G三点共线.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0c4c098615c6bc7e6dcf72e5b5201a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a089c207e39a24d0d82aa853ac2bbb8c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/23/e575d02c-657e-469a-9eb1-3fe51654a2e0.png?resizew=211)
(1)求椭圆的标准方程;
(2)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51d79cbc472097d8905c1f11cfc357b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
②过A作左准线l的垂线,垂足为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36d59d82cb961f72864994b5e8454107.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
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2020-02-18更新
|
225次组卷
|
2卷引用:2020届江苏省镇江市高三上学期第一次调研考试(期末)数学试题
名校
5 . 顶点在原点且以双曲线
的右焦点为焦点的抛物线方程是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6cf8bc908b192921416bb2d958ed539.png)
您最近一年使用:0次
2020-02-18更新
|
332次组卷
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3卷引用:2020届江苏省镇江市高三上学期第一次调研考试(期末)数学试题
名校
6 . 设双曲线![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19f3fa0b40fb0d9b8c62e37316ab3b04.png)
的左右焦点分别为
,过
的直线分别交双曲线左右两支于点M,N.若以MN为直径的圆经过点
且
,则双曲线的离心率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19f3fa0b40fb0d9b8c62e37316ab3b04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31731c556be81067853a1165a5d1d2bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](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/55ee3f3db2957a1fd82e7fb39ea471ba.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2019-12-15更新
|
964次组卷
|
7卷引用:江苏省镇江市句容碧桂园学校2022-2023学年高三上学期期末模拟数学试题
名校
7 . 如图,四棱锥
的底面是直角梯形,
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c709ccf950ed4d37ad9e9234dd2446b2.png)
,
是
的中点,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/7/ce97a024-445f-4001-aa67-16178fccc470.png?resizew=189)
(Ⅰ)证明:
⊥平面
;
(Ⅱ)求二面角
的大小;
(Ⅲ)线段
上是否存在一点
,使得直线
平面
. 若存在,确定
点的位置;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faeb97acf19bd3b2c6c77c2814df4d2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e52411c8437d0640c5b3d87cf5ebebb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c709ccf950ed4d37ad9e9234dd2446b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4825a88bdf4286d64be1401f68f9b840.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a6e2867f32d3f1c3cd36cd3a11a8580.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/696f6b2d30bf86cdb323a1da93ca6d23.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/7/ce97a024-445f-4001-aa67-16178fccc470.png?resizew=189)
(Ⅰ)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a424b50eaeafa6f302ffd95476cb86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc9c9cfa597b444b5c9dbae7a825a695.png)
(Ⅱ)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0455492c3db408f8d1d19c57d122a9ac.png)
(Ⅲ)线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c2bc5e50b8dfa02601c70822252854a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a19ead0bee07b3b7d27f17b32073c932.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34be4e71cabf458f17a6cd7f24bc70af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
您最近一年使用:0次
2019-02-02更新
|
958次组卷
|
6卷引用:江苏省扬中市第二高级中学2022届高三上学期期末考前热身数学试题
名校
8 . 抛物线
的焦点到双曲线
渐近线的距离为_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ac62b1ade07205ae2693ec1ab135def.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9a0bd4bd9985f1e367c100b453ed03f.png)
您最近一年使用:0次
2019-01-23更新
|
1371次组卷
|
4卷引用:【市级联考】江苏省镇江市2019届高三上学期期末考试数学试题
9 . 已知椭圆
:
的长轴长为4,两准线间距离为
.设
为椭圆
的左顶点,直线
过点
,且与椭圆
相交于
,
两点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/5/60ffddd9-b3d2-40a4-bad5-fe42bd569680.png?resizew=174)
(1)求椭圆
的方程;
(2)若
的面积为
,求直线
的方程;
(3)已知直线
,
分别交直线
于点
,
,线段
的中点为
,设直线
和
的斜率分别为
,
,求证:
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e2031d209711b058f3d278ede3c1d33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23ee8669bc280bff4b20644cb82faf23.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://img.xkw.com/dksih/QBM/editorImg/2022/12/5/60ffddd9-b3d2-40a4-bad5-fe42bd569680.png?resizew=174)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c105d6ba18fbb0581fb982175e2eac9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4056761b8f826eeb6ad8c9a151d3c9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(3)已知直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e55aa0a20848c37c1892c567b2315e04.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/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c118858379800688c993a8b61270b356.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bcb166b53a49e393871bcb14a528792.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/219d4c0096293c5d32fd3f5acf7addae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed13811e23545f2e6334aff384ec862c.png)
您最近一年使用:0次
名校
10 . 已知
,则“
”是“直线
平行”的____ 条件.
(从“充分不必要”、“必要不充分”、“充要”“既不充分也不必要”中选择一个).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dcbca3478eae63853d2aab5332e2e56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
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8卷引用:江苏省镇江市2018届高三上学期期末统考数学试题
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