1 . 已知在平面直角坐标系
中,椭圆
的右顶点为
,上顶点为
,
的面积为
,离心率
.
(1)求椭圆
的方程;
(2)若斜率为
的直线
与圆
相切,且
与椭圆
相交于
、
两点,若弦长
的取值范围为
,求斜率
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.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/866b81a8384cce4f24867baca2e6820c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/075ba8c6fb5ef7288cd3fed425c8e69e.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若斜率为
![](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/f240cccaf24af8a796abb95cb42be52e.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/084cf5ffced059f5653ee2a1023518b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81b92075c4fff5c0a08fe4475fd29dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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解题方法
2 . 已知在平面直角坐标系
中,椭圆
的右顶点为A,上顶点为B,
的面积为
,离心率
.
(1)求椭圆C的方程;
(2)若斜率为k的直线
与圆
相切,且l与椭圆C相交于
两点,若弦长
的取值范围为
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/075ba8c6fb5ef7288cd3fed425c8e69e.png)
(1)求椭圆C的方程;
(2)若斜率为k的直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f240cccaf24af8a796abb95cb42be52e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e2ac18a8a2c5603d9588666978309e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/084cf5ffced059f5653ee2a1023518b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81b92075c4fff5c0a08fe4475fd29dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7db9b4ac9106bfaf32eba6ae265872b.png)
您最近一年使用:0次
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解题方法
3 . 如图,已知椭圆
和双曲线
有公共的焦点
,
,
的离心率分别为
,且在第一象限相交于点
,则下列说法中错误的是( )
① 若
,则
;
② 若
,则
的值为1;
③
的面积
;
④ 若
,则当
时,
取得最小值2.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f4ced0befad821ab1dec3c3a69f40ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9c979e1eb2d04e6fa5738675ffd4eb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/915511284d8f9fb113edcb313c36cf41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/495f339e1389be25d3b8c4eea9fb5918.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89bcad7d501ebc493181d2374a3b4e0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faa819f2bf4cbbb51e25d8a52b6bc028.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/19/e121d59b-8e4f-464a-a9e7-263c3dd2d1f1.png?resizew=181)
① 若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53ec5f95be3e9af883c4a9b391e84e70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee1b255797a6cea3c239db1e209b0d52.png)
② 若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d86600c9acb21fd72ff18936f9b34adc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5401e499454e615518e7ed90f4dde539.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/002ed1ebb2cb936e10ab478789f91c7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b47a973e6ef02afb33b32bf463254500.png)
④ 若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d124b231bf2cd3746f35e6c68cd7178f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e94a6bfd407bd7ad86279f11a729b14f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb70c73df1696ee91cfc72e1a57f6dec.png)
A.①② | B.②③ | C.③④ | D.②④ |
您最近一年使用:0次
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解题方法
4 . 设椭圆
(
)的右焦点为F,椭圆C上的两点A、B关于原点对称,且满足
,
,则椭圆C的离心率的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7d72a07a4e5acfc140a3cea1f26b951.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0c4c098615c6bc7e6dcf72e5b5201a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ad4f73a1f248acfe2ad194fb6aa17f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44d1f1ae03e250c3edfad94a6d908d08.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2023-06-13更新
|
2330次组卷
|
10卷引用:四川省成都市2023-2024学年高二上学期期末练习数学试题(3)
四川省成都市2023-2024学年高二上学期期末练习数学试题(3)四川省绵阳南山中学2023-2024学年高二上学期期中考试数试题重庆市第八中学校2022-2023学年高二下学期第二次月考数学试题(已下线)高二上学期期中考试选择题压轴题50题专练-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)山西省山西大学附属中学2024届高三上学期10月月考(总第四次)数学试题重庆市九龙坡区四川外国语大学附属外国语学校2024届高三上学期期中数学试题(已下线)专题06 椭圆性质综合归类-【巅峰课堂】2023-2024学年高二数学上学期期中期末复习讲练测(人教A版2019选择性必修第一册)(已下线)第八章 解析几何 专题8 有关椭圆的离心率问题 高中数学优质试题一题多解和变式训练黑龙江省哈尔滨市黑龙江省实验中学2023-2024学年高二上学期12月月考数学试题河北省石家庄市第二中学2023-2024学年高二上学期第三次月考(12月)数学试题
名校
解题方法
5 . 已知椭圆
的左、右焦点分别为
,离心率为
,点
在椭圆上,连接
并延长交
于点
,连接
,若存在点
使
成立,则
的取值范围为___________ .
![](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/168b3e4b1d6f04226fa2687a72a268b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ac86e1c253297a377e14fb9a1689be8.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/a16c755ab3fea6ca99b13193a5d7e485.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a10d23ff4ff1be567d781d7624a663c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ded4a47543a89c17be98722ed14e71b.png)
您最近一年使用:0次
2023-04-09更新
|
3317次组卷
|
9卷引用:四川省成都市第七中学2023-2024学年高二上学期期末复习数学试题(三)
四川省成都市第七中学2023-2024学年高二上学期期末复习数学试题(三)江西省宜春市宜丰中学2024届高三上学期期末数学试题浙江省嘉兴市2023届高三下学期4月教学测试(二模)数学试题(已下线)专题07 平面解析几何(已下线)模块八 专题7 以解析几何为背景的压轴小题(已下线)专题06 椭圆性质综合归类-【巅峰课堂】2023-2024学年高二数学上学期期中期末复习讲练测(人教A版2019选择性必修第一册)湖南省长沙市长郡中学2024届高三上学期月考数学试题(五)(已下线)专题08 圆锥曲线 第三讲 圆锥曲线中的最值与范围问题(分层练)(已下线)专题5 焦点弦长 公式性质 练(高考真题素材库之典型好题母题)
名校
解题方法
6 . 定义椭圆C:
上的点
的“圆化点”为
.已知椭圆C的离心率为
,“圆化点”D在圆
上.
(1)求椭圆C的方程;
(2)设椭圆C的左顶点为A,不过点A的直线l交椭圆C于M,N两点,点M,N的“圆化点”分别为点P,Q.记直线l,AP,AQ的斜率分别为k,
,
,若
,则直线l是否过定点?若直线l过定点,求定点的坐标;若直线l不过定点,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbe115831e7a4a0cccfa3b4bd2e9943f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19d0066d806e2fadbe68c1405afb0e80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5f5d967ad135991b6075ee45df55643.png)
(1)求椭圆C的方程;
(2)设椭圆C的左顶点为A,不过点A的直线l交椭圆C于M,N两点,点M,N的“圆化点”分别为点P,Q.记直线l,AP,AQ的斜率分别为k,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed06be37684e5999b3378a09c7706b48.png)
您最近一年使用:0次
2023-03-02更新
|
781次组卷
|
4卷引用:四川省成都市玉林中学2023-2024学年高二上学期期末模拟数学试题(一)
解题方法
7 . 已知椭圆
,离心率为
.点
为椭圆C上一动点(其中
,
),点
,
为椭圆C左右焦点,直线
与直线
在一象限交于点
,则线段
长度为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a304696b261e993dcaa4038627ac9bab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7775aa57ca0e62216f3039ed88dceed0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13747fa9a42164caebe2c9b7c5d06d3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b170470d02c85c1be9a3faff5eca0de.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/56f7299e8c8873f61b5ce5d3f2333b11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0739793f234f8e86adc6177801ae7295.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
A.2 | B.![]() | C.1 | D.4 |
您最近一年使用:0次
2023-02-23更新
|
486次组卷
|
2卷引用:四川省凉山州西昌市2022-2023学年高二上学期期末检测数学(理)试题
名校
解题方法
8 . 已知椭圆
:
的离心率为
,其左、右焦点分别为
、
,上顶点为
,且
.
(1)求椭圆
的方程;
(2)直线
:
与椭圆
交于
两点,О为坐标原点.试求当
为何值时,
恒为定值,并求此时
面积的最大值.
![](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/860884c0017c8bceb5b0edff796c144f.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc7a9140bf7ed15de4241aa9ad8924a4.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d27bc3a7f511eb588c096c5672d5da49.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/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17a0d9a2f14f7e789892487d6585804a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
您最近一年使用:0次
2023-02-22更新
|
1091次组卷
|
5卷引用:四川省绵阳市2022-2023学年高二上学期期末数学理科试题
解题方法
9 . 古希腊数学家阿基米德利用“逼近法”得到椭圆的面积等于圆周率
与椭圆的长半轴长、短半轴长的乘积.已知椭圆
的中心为原点,焦点
均在
轴上,离心率等于
,面积为
.
(1)求
的标准方程;
(2)若直线
与圆
相切,且直线
与
交于
两点,求
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70f5389990c3a0c5373f3bd9fb2454c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7294f5ae2a24ff42e84cd9773b2a7287.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d93ea6b78c16307d56cba63315d0051.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a05f7dc7d03b60e935281a54523a7fec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39acab3cfb59bfc9591371721ab01d93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a9a6eeeebf3cff569578d7366b755aa.png)
您最近一年使用:0次
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解题方法
10 . 设
分别为椭圆
的左顶点和上顶点,
为
的右焦点,若
到直线
的距离为
,则该椭圆的离心率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
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2023-01-14更新
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3卷引用:四川省绵阳实验高级中学2022-2023学年高二上学期1月线上测试一数学试题