名校
解题方法
1 . 已知椭圆
:
的左顶点为
,焦距为
.动圆
的圆心坐标是
,过点
作圆
的两条切线分别交椭圆于
和
两点,记直线
、
的斜率分别为
和
.
(1)求证:
;
(2)若
为坐标原点,作
,垂足为
.是否存在定点
,使得
为定值?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/913f78382630e50543e5f7192cae3ed3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afa482d7bcaa385bfc3548b42a4bfb60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.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/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50b3ae183997b707d16eb4e7f6712fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46b728c0e69820cdcd839e67ffdb1014.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3c922f835c095ce76ccef75e396b1cb.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/d44e8bc37ed03f44470762748a8f942a.png)
您最近一年使用:0次
2023-11-09更新
|
779次组卷
|
3卷引用:江西省宜春市铜鼓中学2023届高三上学期第三次阶段性测试数学试题
名校
2 . 如果直线l:
与椭圆C:
总有公共点,则实数a的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96745a1ebefd42dd83430da4ee843b51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b24214f111f7c6d2b64e53ad970438b.png)
您最近一年使用:0次
2023-08-17更新
|
340次组卷
|
4卷引用:江西省南昌市第十中学2022-2023学年高二上学期期中数学试题
江西省南昌市第十中学2022-2023学年高二上学期期中数学试题江西省上饶市余干县蓝天中学2023-2024学年高二上学期期中考试数学试题(已下线)3.1.2 椭圆的简单几何性质(10大题型)精练-【题型分类归纳】2023-2024学年高二数学同步讲与练(人教A版2019选择性必修第一册)(已下线)第3章 圆锥曲线与方程单元检测(基础卷)-2023-2024学年高二数学《重难点题型·高分突破》(苏教版2019选择性必修第一册)
3 . 直线
与焦点在y轴上的椭圆
总有两个公共点,则实数m的取值范围是____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/682b383aceb4c979b3d3330beb6e39b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/223ed6c8eda383bca1463018c662e160.png)
您最近一年使用:0次
解题方法
4 . 若直线l:
与曲线C:
有两个公共点,则实数m的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aae2d6290baeab2b437a88a7b23a5991.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09de4992c382844d11c46bc0c11a2c72.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2022-12-27更新
|
582次组卷
|
5卷引用:江西省赣州市九校2023届高三上学期12月质量检测数学(文)试题
江西省赣州市九校2023届高三上学期12月质量检测数学(文)试题河南省部分学校2022-2023学年高三12月大联考文科数学试题河南省郑州市励德双语学校2022-2023学年高三上学期期末考试理科数学试题河南省五市2023届高三第一次联考数学(文科)试题(已下线)专题3.5 直线与双曲线的位置关系【七大题型】-2023-2024学年高二数学举一反三系列(人教A版2019选择性必修第一册)
5 . 已如椭圆
的左,右两焦点分别是
,其中
,直线
与椭圆交于A,B两点.则下列说法中正确的有( )
![](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/c21b2006b5b4095ac23eca5cbc032e6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7a70fd1c2fa98a68164574481cff7ec.png)
A.若![]() ![]() |
B.若![]() ![]() |
C.![]() ![]() |
D.![]() ![]() |
您最近一年使用:0次
2022-12-25更新
|
1140次组卷
|
3卷引用:江西省上饶市民校考试联盟2023届高三上学期阶段测试(二)数学(理)试题
名校
6 . 用圆规画一个圆
,然后在圆内标记点
,并把圆周上的点
折叠到点
,连接
,标记出
与折痕
的交点
(如图),若不断在圆周上取新的点
,
,
.进行折叠并得到标记点
,
,
.设圆
的半径为4,点
到圆心
的距离为2,所有的点
,
,
,
形成的轨迹记为曲线
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/20/f5bd4676-7a48-4df9-a4d5-728eb50d2d4f.png?resizew=152)
(1)以
所在的直线为
轴,
的中垂线为
轴建立平面直角坐标系,求曲线
的标准方程;
(2)设直线
与曲线
交于
,
两点,且以
直径的圆经过曲线
的中心,求实数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1652145a4785b50fa22fdd8c63f724b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1652145a4785b50fa22fdd8c63f724b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b104090ea2ac34be58a76a4e0e95cb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b9cb8e6ff801523b0304576cd69fd2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/797e67927616b141ed7c6b83f8b6f4fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07096af3b99fd1cb11c31f19a2c6408e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7df1d9b712b639c8b6809c9f3ae03706.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32efe4eff75508cb93e828c735dcb695.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07096af3b99fd1cb11c31f19a2c6408e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b104090ea2ac34be58a76a4e0e95cb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7df1d9b712b639c8b6809c9f3ae03706.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32efe4eff75508cb93e828c735dcb695.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07096af3b99fd1cb11c31f19a2c6408e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/20/f5bd4676-7a48-4df9-a4d5-728eb50d2d4f.png?resizew=152)
(1)以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45018b0d8506401107f1eca44a55fa34.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/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2022-11-15更新
|
261次组卷
|
2卷引用:江西省南昌市南昌县莲塘一中2022-2023学年高二上学期10月月考数学试题
名校
7 . 已知椭圆
,过左焦点F的直线
与椭圆交于A、B两点,(点A在x轴上方),若
,则直线
的斜率的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec503feb3748e8d4cc110b22d9b69a6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a159de0b2d9eb1ae0b7e664e64d3c6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ef7833fd0586792e75a4fbd0e510bc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a159de0b2d9eb1ae0b7e664e64d3c6c.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
解题方法
8 . 已知椭圆C:
,点
,
分别为椭圆的左、右焦点.
(1)求椭圆C的短轴长和点
,
的坐标;
(2)设
为椭圆C上一点,且在第一象限内,直线
与y轴相交于点Q,若点
在以PQ为直径的圆的外部,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b99285432bd760aac3ae460752cdde0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
(1)求椭圆C的短轴长和点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7775aa57ca0e62216f3039ed88dceed0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c83e02c09428538ce8ae136cff26d3f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
您最近一年使用:0次
9 . 已知椭圆
的离心率为
,
上的点P与
外的点
距离的最小值为2.
(1)求椭圆
的方程;
(2)若直线l与椭圆
交于点A,B,当直线l被圆
截得的弦长为2b时,求
面积的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40d2aff5570bd20fb94f9320551bd32c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cffa35373ec4e4684107b42adb7a5161.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cffa35373ec4e4684107b42adb7a5161.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78e0b4cce429003557b051ea0fa2f7de.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cffa35373ec4e4684107b42adb7a5161.png)
(2)若直线l与椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cffa35373ec4e4684107b42adb7a5161.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41b96eda0601673fafb836643969914f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
您最近一年使用:0次
2022-06-06更新
|
215次组卷
|
2卷引用:江西省南昌市2022届高三下学期核心模拟卷(中)数学(理)试题
名校
解题方法
10 . 已知椭圆
过点
,短轴一个端点到右焦点的距离为2.
(1)求椭圆
的方程;
(2)设过定点
的直线
与椭圆交于不同的两点A、B,若坐标原点
在以线段
为直径的圆外,求直线
的斜率
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ef233ad3db01fa3ce9ee94eaad8e64e.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设过定点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b25ce60648ea5042ab5eb5702efe651a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次