名校
1 . 设
是椭圆
的左、右焦点,
为坐标原点,
为
上一个动点,且
的取值范围为
,则椭C的长轴长为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5b710693455742dbee1355f84542568.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da34ce730f711c09909d53806fe2330a.png)
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2023-12-29更新
|
621次组卷
|
5卷引用:河北省衡水市枣强中学2024届高三上学期期末考试数学试题
名校
2 . 若直线
与
:
没有交点,则过点
的直线与椭圆
的交点个数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4423e60c976505c7476187afd5ba90ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5f5d967ad135991b6075ee45df55643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f9fd8cfcd9d93b09288e353ea1997f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6205da5e1d2730ee0b3de8bca3e29f5e.png)
A.至多为![]() | B.![]() | C.![]() | D.![]() |
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2022-12-13更新
|
841次组卷
|
5卷引用:河北省石家庄实验中学2022-2023学年高二上学期期末数学试题
河北省石家庄实验中学2022-2023学年高二上学期期末数学试题黑龙江省绥化市望奎县第一中学2021-2022学年高二上学期期末数学试题黑龙江省鸡西市鸡西实验中学2022-2023学年高二上学期期末考试数学试题(已下线)3.1.2 椭圆的简单几何性质(精练)-2023-2024学年高二数学《一隅三反》系列(人教A版2019选择性必修第一册)(已下线)第三章 圆锥曲线单元测试(基础版)-【冲刺满分】2023-2024学年高二数学重难点突破+分层训练同步精讲练(人教A版2019选择性必修第一册)
名校
解题方法
3 . 已知
的左,右焦点分别为
,
,长轴长为4,点
在椭圆C外,点Q在椭圆C上,则下列说法中正确的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e79d247aef0e583d625d00a6e72db87a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e82fe25db889399bb3ca4ffd5dd5db84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a61d572ecf27dc02fcbd588f24647b1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23b2072de3e24c70c241d020a591378e.png)
A.椭圆C的离心率的取值范围是![]() |
B.已知![]() ![]() ![]() |
C.存在点Q使得![]() |
D.![]() |
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2022-10-17更新
|
1032次组卷
|
6卷引用:河北省沧州市2023届高三上学期12月教学质量监测调研数学试题
名校
解题方法
4 . 已知椭圆
的焦点
,且椭圆
的离心率为
.
(1)求椭圆
的方程;
(2)若
、
为
上不同的两点,动点
、
满足:
,
,且
在
上.
(i)求证:点
在
上;
(ii)若
过焦点
,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/092fd1b1d33979818300cd2e3699bff7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dee14db57f0c762aad845cf5b4a243c0.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若
![](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/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/352c283e5e0316b9e27768db28296491.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecef922a02b99afe79e373de2beb7646.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(i)求证:点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(ii)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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2022-03-22更新
|
548次组卷
|
4卷引用:河北省唐山市曹妃甸区曹妃甸新城实验学校(北京景山学校曹妃甸分校)2022-2023学年高二上学期期末数学试题
5 . 已知椭圆
:
,点
是椭圆
上的一个动点,满足
(
为坐标原点,
为椭圆的右焦点),则点
的横坐标的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/271e595c257e4c0ade90a9bbbf0e6b0d.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/87ea33ddce3e892ef281229f138054fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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名校
6 . 椭圆
经过点
,则
最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a52fc3679890ba0ac7bba0f4e673389a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb386131189cbe8fada44a85256da413.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e154d4af13ebb10274da58742f844618.png)
A.![]() | B.![]() | C.28 | D.27 |
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2020-01-02更新
|
346次组卷
|
2卷引用:河北省石家庄市第二十二中学2023-2024学年高二上学期期末数学模拟试卷
名校
7 . 已知椭圆
的离心率
,
为椭圆上的一个动点,若定点
,则
的最大值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e26d4f72ec5a9cf9d6a34094109b9fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e5bb267505c2a5fc6f9abc02bd43120.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d42f05b013e4b7166cbc87c5a83d6a85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3ce8eed2660a33465a7f764e76cdba8.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2019-01-16更新
|
1062次组卷
|
6卷引用:河北省武邑中学2018-2019学年高二下学期期末数学(文)试题
8 . 点P的坐标(x,y)满足方程
,点B(0,1),则|PB|的最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00997b5d9553cba95211007b4bb72a25.png)
A.1 | B.3 | C.![]() | D.2![]() |
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9 . 如图动直线
与抛物线
交于点
,与椭圆
交于抛物线右侧的点
为抛物线的焦点,则
的最大值为
![](https://img.xkw.com/dksih/QBM/2017/2/16/1625062942171136/1625885882466304/STEM/e94825a126a84ba58c5512ec16e4c916.png?resizew=138)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f7b10091d69c742a4c4f246a9a79557.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661bd8d4d82205bd311e7349ae91f602.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7895aece9dd5a90424879ea9184037a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b2b4f93a1950f32543f882464667b19.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f97fdb5ff606d8ccd5f99c30f46e67df.png)
![](https://img.xkw.com/dksih/QBM/2017/2/16/1625062942171136/1625885882466304/STEM/e94825a126a84ba58c5512ec16e4c916.png?resizew=138)
A.![]() | B.![]() | C.![]() | D.![]() |
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10 . 在平面直角坐标系
中,已知圆
的圆心为
,圆
的圆心为
,一动圆
内切,与圆
外切.
(Ⅰ)求动圆圆心
的轨迹方程;
(Ⅱ)过点
的直线
与曲线
交于
两点.若
,求直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca40197c1782d1159ea3f9d96d30c4b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7e38a7033cdeb6bf772e7adaca62f2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
(Ⅰ)求动圆圆心
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(Ⅱ)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53a948d2f7732d7f03e986c63712089b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ed16f548e186d4c81466270ae34194.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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