名校
解题方法
1 . 已知椭圆
的左、右焦点分别为
为上顶点,离心率 为
,直线
与圆
相切.
(1)求椭圆
的标准方程;
(2)椭圆方程
,平面上有一点
. 定义直线方程
是椭圆
在点
处的极线.
① 若
在椭圆
上,证明: 椭圆
在点
处的极线就是过点
的切线;
② 若过点
分别作椭圆
的两条切线和一条割线,切点为
,割线交椭圆
于
两点,过点
分别作椭圆
的两条切线,且相交于点
. 证明:
三点共线.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d81afe11925b30336768531ede1c278.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c72dcc2ad9bd83bf683a3c10aebf1c6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3656055f5256cd06e636ea96e9f89c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70993bac22dd8e80a4d151900785a7fb.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)椭圆方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62645f10a184693406c85b90386b43d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7f137ff5fe9fd34a482228e24e9a55b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e74b54fca09a55c3720426e2dc4dfa9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7f137ff5fe9fd34a482228e24e9a55b.png)
① 若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7f137ff5fe9fd34a482228e24e9a55b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/dad2a36927223bd70f426ba06aea4b45.png)
② 若过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5eebd2e8567f55a4499c51e3c4eed6c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c55c23f1782d16f190469765e02b8c33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6670479a0083dd2dfd5ad55b47b1ab6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6670479a0083dd2dfd5ad55b47b1ab6.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/6f90c72d708d6d7693d4727ae7882317.png)
您最近一年使用:0次
名校
解题方法
2 . 已知椭圆
的离心率为
,过
的左焦点且斜率为1的直线与
交于
两点.若
,则
的焦距为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58168edb2306922360573f6ba14e90c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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2024-06-13更新
|
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2卷引用:2024届湖南省长沙市第一中学高考最后一卷数学试题
名校
3 . 如果直线
和曲线
恰有一个交点,那么实数
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6b7e9bb0681c6c2cd3c88958991bb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f20abf5325c31e2c4232b38f79b41b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
4 . 已知椭圆C:
短轴长为2,左、右焦点分别为
,
,过点
的直线l与椭圆C交于M,N两点,其中M,N分别在x轴上方和下方,
,
,直线
与直线MO交于点
,直线
与直线NO交于点
.
的坐标为
,求椭圆C的方程;
(2)在(1)的条件下,过点
并垂直于x轴的直线交C于点B,椭圆上不同的两点A,D满足
,
,
成等差数列.求弦AD的中垂线的纵截距的取值范围;
(3)若
,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/347b68f42934c74e0d759a67613a1da9.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/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4884cda7cedc4184bfb723f0f4d8a233.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6afe8f3190de250fa8bfea8c6820b727.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0739793f234f8e86adc6177801ae7295.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/011ae6cb0cf49f6d3d19b485dc1cfc22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a16c755ab3fea6ca99b13193a5d7e485.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86fda993d38532293724009685288b72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/011ae6cb0cf49f6d3d19b485dc1cfc22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd11225d97c2b1e262adff3f1dde30ae.png)
(2)在(1)的条件下,过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/290b64ccb8a211698c1f03997f0b3b2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe343099a06b809272f41b03a4af8dcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b04a1eec4fa5ce0544e4e22693b2d3f0.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78bdcd65ef5bffda1f1e993176e43bef.png)
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2024-04-07更新
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2359次组卷
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5卷引用:湖北省华中师范大学第一附属中学、湖南省湖南师范大学附属中学等三校2024届高三下学期4月模拟考试(二模)数学试卷
湖北省华中师范大学第一附属中学、湖南省湖南师范大学附属中学等三校2024届高三下学期4月模拟考试(二模)数学试卷河南省信阳市第一高级中学(华大新高考联盟)2024届高三4月教学质量测评数学试题河南省信阳市信阳高级中学2024届高三下学期4月二模数学试题(已下线)压轴题02圆锥曲线压轴题17题型汇总-3(已下线)专题13 学科素养与综合问题(解答题18)
解题方法
5 . 已知椭圆
的离心率为
,左、右焦点分别为
,点
为线段
的中点,过点
且斜率为
的直线
交
于
两点,
的面积最大值为
.
(1)求
的方程;
(2)设直线
分别交
于点
,直线
的斜率为
,是否存在实数
,使得
?若存在,求出
的值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98d107e77106ff1a9cb76b504bbc99bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/252ef4f3003d233ce2467fec89315618.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/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f41b500f34c3eacf9fe726d9e135a5d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adbd3e8cf8325999cde03adf845d3dd0.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad00de19086d5c7f6042f7178fef1985.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed21245fcff8d46dbb90007ed907a318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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解题方法
6 . 如图,椭圆
,点
在椭圆C上,
为其上下顶点,且
,过点P作两直线
与
分别交椭圆C于
两点,若直线
与
的斜率互为相反数.
(1)求椭圆的标准方程;
(2)求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f13bf66fc845b115de4ec45b4be0e23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04d468be20b4d43f5de75416de20e8ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce6e6644924732140bf7aff2e4b7e765.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/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/23/34cb8736-a7df-4aaa-a45f-4a5137b8d072.png?resizew=171)
(1)求椭圆的标准方程;
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4dfec890cdfdda355e19463f3be813.png)
您最近一年使用:0次
7 . 在平面直角坐标系
中,点
,点
是平面内的动点.若以PF为直径的圆与圆
内切,记点P的轨迹为曲线E.
(1)求E的方程;
(2)设点
,
,
,直线AM,AN分别与曲线E交于点S,T(S,T异于A),
,垂足为H,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46542271c7fa06f33b222424838c9684.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aee82283f06cedef32eb15b87964f5d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79382ba44ba669b5d43fdd5427adf16c.png)
(1)求E的方程;
(2)设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/383f12cb70ca55eba4ff012771dbfa9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b10c64cc584dde9a132ab54c6981cce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e59cc6019966ce25e3ad146e992f0c68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c60030f98d7cf695840770c05e63dbd1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a31666076b1d37cd2f99afa950da5ab.png)
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2023-12-18更新
|
1753次组卷
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5卷引用:湖南省长沙市长郡中学2024届高三上学期期末适应性考数学试题
湖南省长沙市长郡中学2024届高三上学期期末适应性考数学试题广东省广州市2024届高三上学期调研测试数学试题(B)(已下线)模块一 专题2 《解析几何》单元检测篇 B提升卷(已下线)专题11椭圆(3个知识点7个拓展2个突破7种题型2个易错点)-【倍速学习法】2023-2024学年高二数学核心知识点与常见题型通关讲解练(人教A版2019选修第一册)重庆市南开中学校2023-2024学年高二下学期阶段测试数学试题
8 . 如图,曲线C由上半椭圆
和部分抛物线
连接而成,
与
的公共点为A,B,其中
的离心率为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/17/84882a85-ecc4-4b67-b9ba-83df54da4075.png?resizew=151)
(1)求a,b的值;
(2)过点B的直线l与
,
分别交于点P,Q(均异于点A,B),是否存在直线l,使得以
为直径的圆恰好过点A,若存在,求出直线l的方程;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0f619f9952a6b29614bfaa63ca0018e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16c15a1d39a09b004dcbb59d019d75ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/17/84882a85-ecc4-4b67-b9ba-83df54da4075.png?resizew=151)
(1)求a,b的值;
(2)过点B的直线l与
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
您最近一年使用:0次
名校
解题方法
9 . 已知
是椭圆
的右焦点,
为坐标原点,
为椭圆上任意一点,
的最大值为3,
面积的最大值为
.
(1)求椭圆
的标准方程;
(2)点
是
轴正半轴上的一点,过点
和点
的直线
与椭圆
交于
两点.求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c63f99c1d614a7b240d0f86cac3a207.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b3fbc12c18f37b2a6becae2e26c4d8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.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/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca07069001852295d67c5fb81925c292.png)
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2023-11-06更新
|
751次组卷
|
2卷引用:湖南师范大学附属中学2024届高三上学期月考(三)数学试题
10 . 已知抛物线
的焦点
也是椭圆
的一个焦点,
与
的公共弦长为
.
(1)求椭圆
的方程;
(2)过点
作斜率为
的直线
与
交于
两点,与
交于
两点,且
与
同向.
(i)当直线
绕点
旋转时,判断
的形状;
(ii)若
,求直线
的斜率.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d12b5e5ff59f1eea47300d8d7ca9167e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a408c4d7699de3a03e65d741f751c66.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b10e8abf8690e4b129466ddb918bcc94.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39acab3cfb59bfc9591371721ab01d93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af5f1b06a56fc382feed28e01f1ad102.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4781e3daa2c4e018ca0ae09bb56abc0f.png)
(i)当直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
(ii)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd1af14f9a53cb0f07d5d28dceba30aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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2023-10-04更新
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4卷引用:湖南省长沙市第一中学2024届高三上学期月考(三)数学试题
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