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)
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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)
您最近一年使用:0次
2024-06-13更新
|
56次组卷
|
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
3 . 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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2358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)
4 .
表示以点
为中心的椭圆,如图所示,
为椭圆C:
的左焦点,Q为直线
上的一点,P为椭圆C上的一点,以
为边作正方形
(F,P,A,B按逆时针排列),当P在椭圆上运动时,
的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc5d275721db46e39e5b23a7f2b64268.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9799b1b1f49ef15916b0018547564590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caa04eb7cae40ce5e89da590b9cdb75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/134dde7006742eba3252cb11fe959abe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98f739b07f992bce672aef2fc48b4b93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5c2293f93791a597bf0162411f3395f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/857e804aac2f81757178d237485299fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b65ea04098e8d2809d8163f27d49860c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/17/cf3db5f3-5935-4e04-8948-1081f9a525e9.png?resizew=187)
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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)
您最近一年使用:0次
6 . 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
7 . 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)
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名校
解题方法
8 . 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)
您最近一年使用:0次
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
名校
解题方法
9 . 已知椭圆
为其左、右焦点,
为
上点.
.当
,
面积最大.
(1)求椭圆C的离心率.
(2)过P与椭圆C相切的切线方程为
,求椭圆C的方程.
(3)在(2)的前提下,若
.过P的直线
交C的另一点
,A为C的左顶点.求
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ba9042bd05fb267bef023070cdcf06f.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/faa4ae8d7537feb98c7de50302705609.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd15ead753cf2927f51d07c7727c6cd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/002ed1ebb2cb936e10ab478789f91c7c.png)
(1)求椭圆C的离心率.
(2)过P与椭圆C相切的切线方程为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f60c8585792e633317e4585e177940a3.png)
(3)在(2)的前提下,若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33f76f9480af1327b96309b1f91d137d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9763846b1131e1e3e2d741ad95d5bb0.png)
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4卷引用:湖南省衡阳市田家炳实验中学2023-2024学年高三上学期8月测试数学试题
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解题方法
10 . 已知椭圆
,圆
与x轴的交点恰为
的焦点,且
上的点到焦点距离的最大值为
.
(1)求
的标准方程;
(2)不过原点的动直线l与
交于
两点,平面上一点
满足
,连接BD交
于点E(点E在线段BD上且不与端点重合),若
,试判断直线l与圆M的位置关系,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8a961d9125388011740ee4c5d598370.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/a881309775c3b6a9f4ed408838666342.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)不过原点的动直线l与
![](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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bde95b79781d2ce3aa45c2f6029cc6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ede7faf8b079b09f7f53a5c59815d068.png)
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