名校
1 . 如图,在
中,已知
,其内切圆与AC边相切于点D,且
,延长BA到E,使
,连接CE,设以E,C为焦点且经过点A的椭圆的离心率为
,以E,C为焦点且经过点A的双曲线的离心率为
,则
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fffa3d9c32da53b0ea0c338012ea20c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4aca5534bce25acaeb7379deed8f8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df1ac3ab8d3ce5e61fd2f89761f80976.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d33558881906c228c262ff8024dcfc4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a33a99190a8fd29c36d5a002e3197cc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/120f812ad42739155a1337e7d5a7bcf7.png)
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|
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4卷引用:湖北省黄冈市浠水县第一中学2024届高三下学期第三次高考模拟数学试题
湖北省黄冈市浠水县第一中学2024届高三下学期第三次高考模拟数学试题山东省实验中学2024届高三下学期第一次模拟考试数学试题(已下线)第10题 共焦点的椭圆离心率问题(压轴小题)(已下线)压轴题02圆锥曲线压轴题17题型汇总-1
2 . 在平面直角坐标系内,以原点
为圆心,
(
,
,
为定值)为半径分别作同心圆
,
,设
为圆
上任一点(不在
轴上),作直线
,过点
作圆
的切线
与
轴交于点
,过圆
与
轴的交点
作圆
的切线
与直线
交于点
,过点
,
分别作
轴,
轴的垂线
交于点
.
(1)求动点
的轨迹
的方程;
(2)设
,点
,
,过点
的直线与轨迹
交于A,B两点(两点均在y轴左侧).
(i)若
,
的内切圆的圆心的纵坐标为
,求
的值;
(ii)若点
是曲线
上(
轴左侧)的点,过点
作直线与曲线
在
处的切线平行,交
于点
,证明:
的长为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca5fd57c2c2fcc3c7a574fdd1467d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6024fd4532f5f981deac4582c799a6ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6655cc150ddc9deba2254780984d0024.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3953cec61ac602ce5eb59b7912352179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3953cec61ac602ce5eb59b7912352179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4d8de597f84f1dfac73278f4c4f1703.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(1)求动点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77e4ee0d9eda21284d1c32cea08ef02d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6dc791ae552024ea0df7905bf190f30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ace7c9e3da8613175ca07c54c116127a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(i)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7687a47a2ca6e6cae328e1cbca458290.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/167863df11667e8bbdd204413d3b5137.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a24d95e0548b340af8783a57bdfd05b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b246aa3b56becc905d3fb64c6d5ec4a.png)
(ii)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0739793f234f8e86adc6177801ae7295.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
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解题方法
3 . 用平面
截圆柱面,圆柱的轴与平面
所成角记为
,当
为锐角时,圆柱面的截线是一个椭圆.著名数学家
创立的双球实验证明了上述结论.如图所示,将两个大小相同的球嵌入圆柱内,使它们分别位于
的上方和下方,并且与圆柱面和
均相切.下列结论中正确的有
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7308f33373c9d5b530007ee03375bc86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://img.xkw.com/dksih/QBM/2024/3/31/3465735606255616/3466942152425472/STEM/d83a78cd228b45d485269b627205c38e.png?resizew=4)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/9/bfd96bdc-1e6e-4b80-af0b-bdd94e0732a5.png?resizew=239)
A.椭圆的短轴长与嵌入圆柱的球的直径相等 |
B.椭圆的长轴长与嵌入圆柱的两球的球心距![]() |
C.所得椭圆的离心率![]() |
D.其中![]() ![]() ![]() ![]() |
您最近一年使用:0次
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2024·全国·模拟预测
名校
4 . 若关于
的不等式
在
内有解,则正实数
的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6954585ae7192db0f22958637e3abd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/503a002dd51f5338c4bc0e15fb201c3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
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|
1408次组卷
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5卷引用:湖北省十一校2024届高三联考考后提升数学模拟训练一
湖北省十一校2024届高三联考考后提升数学模拟训练一(已下线)2024年全国高考名校名师联席命制数学(理)押题卷(一)(已下线)模块2专题5 函数同构 化繁为简练(已下线)压轴题01集合新定义、函数与导数13题型汇总 -1广西南宁市第三中学五象校区2024届高三下学期适应性考试数学试题
名校
5 . 已知函数
.
(1)求曲线
在
处的切线方程;
(2)若
,讨论曲线
与曲线
的交点个数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ae2ff77b0364d1d446008e48ab51402.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68c6b6a11760d0724b0b60e55970e229.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7e6ace7ba273101018ae81be08c9024.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/004a9c3c84ff65384fa0b75b9ec2a2cd.png)
您最近一年使用:0次
2024-04-05更新
|
2286次组卷
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4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
解题方法
6 . 已知椭圆
长轴的左右顶点分别为
,短轴的上下顶点分别为
,四边形
面积为
,椭圆
的离心率是
.
的方程;
(2)过点
的直线交
于
两点,直线
与直线
的交点分别为
,证明:线段
的中点为定点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00442d96d695db2c58bf1fb7165fca94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04d468be20b4d43f5de75416de20e8ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92e5d91f4f631c580c155eba8c92bda4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15e28e94a16c1bac067b639083c2bd4d.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/7cef9551d767d7645120055a56718008.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eefa44964db83759aff6fc8dd7ef8f28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
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7 . 已知
为坐标原点,椭圆
上两点
满足
,若椭圆
上一点
满足
,则
的最大值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2242ca20bd7ab3d41b128e10a4071521.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3af31ea41c95a92aeda98e30d065635.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70a24fbe4755454d01b7168a93b26018.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/febf7413b35cf2889fdb57a6b519087c.png)
A.1 | B.![]() | C.![]() | D.2 |
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|
1138次组卷
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5卷引用:湖北省十一校2024届高三联考考后提升数学模拟训练一
湖北省十一校2024届高三联考考后提升数学模拟训练一(已下线)【练】 专题三 平面向量与其他知识的交汇问题(压轴大全)广东省深圳市福田区红岭中学2024届高三高考适应性考试数学试卷(已下线)模型10 向量与解析几何问题模型浙江省精诚联盟2023-2024学年高二下学期3月联考数学试题
名校
解题方法
8 . 已知函数
,
,若
有两个零点
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f98fc3ebd8871c2c959090a8d22e951.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e10dce73bdc1d522ae7cb34805ed3d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aca579894dad67bc82cb715fd48e0d70.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
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|
813次组卷
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3卷引用:湖北省(圆创)高中名校联盟2024届高三下学期3月月考数学试题
名校
9 . 设
的所有可能取值为
,称
(
)为二维离散随机变量
的联合分布列,用表格表示为:
仿照条件概率的定义,有如下离散随机变量的条件分布列:定义
,对于固定的
,若
,则称
为给定
条件下的
条件分布列.
离散随机变量的条件分布的数学期望(若存在)定义如下:
.
(1)设二维离散随机变量
的联合分布列为
求给定
条件下的
条件分布列;
(2)设
为二维离散随机变量,且
存在,证明:
;
(3)某人被困在有三个门的迷宫里,第一个门通向离开迷宫的道,沿此道走30分钟可走出迷宫;第二个门通一条迷道,沿此迷道走50分钟又回到原处;第三个门通一条迷道,沿此迷道走70分钟也回到原处.假定此人总是等可能地在三个门中选择一个,试求他平均要用多少时间才能走出迷宫.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db95c4f9791ca04094be000bd6fc72e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef046c85a536174bec951a53d9f60b33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f0d5998482df4a2f66ac9e54c2a4dc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f51736ae099adaa15ca47aa32ffa9ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a54260f9909300f9e72da4a7b14a5b40.png)
Y X | … | … | |||||
… | … | ||||||
… | … | ||||||
… | … | … | … | … | … | … | … |
… | … | ||||||
… | … | … | … | … | … | … | … |
… | … | ||||||
… | … | 1 |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f49cc73ff3664ca80cfb518d272023d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7600d2cfbdc6146db96cc545706004f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a00892a44afbb626aabad4d9fc0b8a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e2279cab9c33270e284a26c51247273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dfe778b3e0bbd2220de99c382ec323b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
离散随机变量的条件分布的数学期望(若存在)定义如下:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0f6b8d1f9426e6b710431b3a4e10638.png)
(1)设二维离散随机变量
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db95c4f9791ca04094be000bd6fc72e1.png)
Y X | 1 | 2 | 3 | |
1 | 0.1 | 0.3 | 0.2 | 0.6 |
2 | 0.05 | 0.2 | 0.15 | 0.4 |
0.15 | 0.5 | 0.35 | 1 |
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71ce9db5574a2df6184bdc7cd13b208a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a829fdd8ec0f3b7ede883cf2c3e53b.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db95c4f9791ca04094be000bd6fc72e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fc79c66ebaacd709ec9965b90a22b14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a507ed1895a2d0c93b01e994e36bb6e6.png)
(3)某人被困在有三个门的迷宫里,第一个门通向离开迷宫的道,沿此道走30分钟可走出迷宫;第二个门通一条迷道,沿此迷道走50分钟又回到原处;第三个门通一条迷道,沿此迷道走70分钟也回到原处.假定此人总是等可能地在三个门中选择一个,试求他平均要用多少时间才能走出迷宫.
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2024-03-29更新
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4卷引用:湖北省(圆创)高中名校联盟2024届高三下学期3月月考数学试题
名校
10 . 以
表示数集
中的最小值,已知不全为
的实数
,
,二元函数
,则
的最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65d51777d3fca1ee8f588a6c39190dae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c95b6be4554f03bf496092f1acdfbb89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da09cd9f0ceea66bee24f530329f62a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1c3c1ed4fb65ab9505ad8078d8d0fb5.png)
A.0 | B.![]() | C.1 | D.2 |
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2卷引用:湖北省(圆创)高中名校联盟2024届高三下学期3月月考数学试题