名校
解题方法
1 . 若点
既在直线
上,又在椭圆
上,
的左、右焦点分别为
,
,且
的平分线与
垂直,则
的长轴长为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3497af3942a788b64c6b91b62a8dbf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2644e9f73e5871db934fdafc431d675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94fe48bf7af022ecbbe13833fdcc2c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
A.![]() | B.![]() | C.![]() ![]() | D.![]() ![]() |
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|
843次组卷
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5卷引用:广东省河源市2023-2024学年高二上学期期末考试数学试题
23-24高二上·广东汕头·期末
2 . 已知椭圆
:
的离心率为
,且椭圆
过点
,点
,
分别为椭圆
的左、右顶点.
(1)求椭圆
的方程;
(2)点
,
为椭圆
上不同两点,过椭圆上的点
作
,且
,求证:
的面积为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10ea9e5cd5bb0c9916c56020cfb458d3.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)点
![](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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/135642ee219ef29253e7bd35e4f47362.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc8c0635e65b4dfedde8b411e5626aae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25dd698d57d1cf239eb8752aecaaa4f4.png)
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名校
解题方法
3 . 如图,椭圆
离心率为
,椭圆
的左右顶点分别为
、
,上顶点为
. 点
在椭圆上.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/14/5ecba61f-7e8d-4f65-b3e4-85d419444dae.png?resizew=180)
(1)求椭圆
的方程;
(2)椭圆
上有一动点
,连接
和
分别交
轴于
和
,请问是否存在实数
,使得
.若存在,求出
值,若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3324199c6751f2e0e6d8542783b0d957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd22dd69233b41ef0a4d2f707c281ff6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/14/5ecba61f-7e8d-4f65-b3e4-85d419444dae.png?resizew=180)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbe68e9ebbe4e7d20f5c86ac576d0b51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/902f97913e1af1e6c793f7edfe6b2114.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d7b816eca15d4b7d060013df53edd53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a45270cee542ea0e89050b7751f3a8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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|
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解题方法
4 . 已知
分别是双曲线
的左右焦点,过
的直线l与C只有一个公共点P,且
,则C的离心率为_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83bf4fd84818abac17a9d21237ac5ce5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2427943a38dcd93c9ec9b735ffc9fe5.png)
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5 . 设抛物线
的焦点为
,从抛物线上点
出发的光线过点
后,从抛物线上的点
(异于原点
)反射,反射光线经过点
,则
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62af58509f7411cc0db452c36bdae2c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/356547c08d2cd7ba5a6aaf412266d7b7.png)
A.直线![]() ![]() |
B.![]() ![]() |
C.以![]() ![]() |
D.若直线![]() ![]() |
您最近一年使用:0次
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2卷引用:广东省汕尾市2023-2024学年高二上学期1月期末教学质量监测数学试题
6 . 已知抛物线
的焦点为
,准线为
上的点
到焦点
的距离为3,过
的直线
与抛物线交于
两点(点
在第一象限),过线段
的中点
作
轴的垂线,交抛物线于点
,交
的准线
于点
为坐标原点,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e6c830bfa9a1b979a1a9665166424bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/585348bf4309a13c9bfc8d65ffd3422e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a875bc81f2e72e14c334417e7b694e57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13dea1bd3d0dd84b8b6f6ff634c5600c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.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/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de10f0277f23e757be5bf05d0e1b14bc.png)
A.![]() |
B.若![]() ![]() ![]() |
C.![]() |
D.![]() ![]() |
您最近一年使用:0次
解题方法
7 . 已知椭圆
经过点
和
.
(1)求
的方程;
(2)若点
(异于点
)是
上不同的两点,且
,证明直线
过定点,并求该定点的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7e5578ca83f5bd5c285994061b9c015.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dea8a480a2fe03293cb8303da8837d7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/913f78382630e50543e5f7192cae3ed3.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32476e6bf0fed9c3d3f23ebfd40aa693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
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|
444次组卷
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5卷引用:广东省部分学校2023-2024学年高二上学期期末教学质量监测数学试卷
名校
8 . 如图,在棱长为6的正方体
中,动点P在截面
内(含边界),且满足
.下列说法正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/8/44fc13b7-0717-4f7a-87a1-bb6c9541522f.png?resizew=157)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fae7f4612c548b1f72a964ddb291cd2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3765296ff6363e6a2321d236dbae5da4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/8/44fc13b7-0717-4f7a-87a1-bb6c9541522f.png?resizew=157)
A.点P的轨迹长度为![]() |
B.![]() ![]() ![]() |
C.存在点P使得![]() |
D.![]() ![]() ![]() |
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解题方法
9 . 已知O为坐标原点,过抛物线C:
焦点F的直线与C交于A,B两点,其中A在第一象限,点
,直线
交C于另一点N,若
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7089148c36cb3c39af71de653756396a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4fa16752b25d7bc123f9037bcd5ea92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/188cb9d382147942736d0c5edd806707.png)
A.直线![]() ![]() | B.![]() |
C.![]() | D.直线![]() |
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|
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2卷引用:广东省广州市五校联考2023-2024学年高二上学期期末联考数学试卷
名校
解题方法
10 . 已知椭圆
:
的左右焦点分别为
,
,过
的直线交椭圆
于A,B两点,若
,点
满足
,且
,则椭圆C的离心率为( )
![](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/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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47d721883ffd9a2c61ed89a5790ba205.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85b9697334ff5784b8fa778c7aa59c35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/620963ebd61d6f8da4875c2a23d07dbd.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
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|
2024次组卷
|
10卷引用:广东省广州市五校联考2023-2024学年高二上学期期末联考数学试卷
广东省广州市五校联考2023-2024学年高二上学期期末联考数学试卷湖南省株洲市第二中学2021-2022学年高二上学期第三次月考数学试卷贵州省铜仁第一中学2023-2024学年高二下学期2月开学适应性模拟检测数学试题四川省达州外国语学校2023-2024学年高二下学期3月月考数学试题江西省南昌市第二中学2024届高三“九省联考”考后适应性测试数学试题(三)四川省绵阳市南山中学2024届高三下学期入学考试数学(理)试题(已下线)黄金卷01(2024新题型)(已下线)题型23 6类圆锥曲线离心率问题解题技巧河南省信阳市新县高级中学2024届高三考前第六次适应性考试数学试题(已下线)专题7 圆锥曲线与定比分点法【练】(压轴小题大全)