名校
解题方法
1 . 已知椭圆
:
的左右焦点分别为
,
,将曲线
上所有点的横坐标变为原来的
倍,纵坐标变为原来的
倍,得到曲线
,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fbb63a88cfee74765e99b2f8ae3874d.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/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
A.曲线![]() |
B.曲线![]() ![]() |
C.曲线![]() ![]() ![]() ![]() |
D.若![]() ![]() ![]() ![]() |
您最近一年使用:0次
名校
2 . 椭圆
的两个焦点分别为
,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3cb214fc0c0482076ba1887f5829c26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
A.过点![]() ![]() ![]() |
B.若![]() ![]() ![]() ![]() ![]() |
C.若直线![]() ![]() ![]() ![]() |
D.若![]() ![]() ![]() ![]() ![]() |
您最近一年使用:0次
2024·全国·模拟预测
解题方法
3 . 已知椭圆
(
)的左、右焦点分别为
,
,过点
的直线
与椭圆
交于
,
两点(
点位于
点上方),且
,延长
,
分别交椭圆
于点
,
,连接
交
轴于点
,若
的面积是
的面积的3倍,则下列说法正确的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54976e19a9f87dfdd3b1c0eccac18aa7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d33da711e50e96568facb18cef27165.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/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ffd154a2d2e0cf4ce5f6b15d2685975.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e86dbcf83cd5d3421b3eed7be7dab32d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3656055f5256cd06e636ea96e9f89c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.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/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9568bd0e4da5b470855a7bb47705731.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9116e096dea74380db2b76e5de6b47c2.png)
A.椭圆![]() ![]() | B.![]() ![]() |
C.![]() | D.直线![]() ![]() |
您最近一年使用:0次
名校
解题方法
4 . 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
2024-04-09更新
|
885次组卷
|
2卷引用:山东省菏泽第一中学八一路校区2023-2024学年高三下学期三月份月考数学试题
2024高二·江苏·专题练习
解题方法
5 . (多选题)已知椭圆的左、右焦点分别为
、
,点
在椭圆内部,点
在椭圆上,椭圆
的离心率为
,则以下说法正确的是( )
A.离心率![]() ![]() |
B.存在点![]() ![]() |
C.当![]() ![]() ![]() |
D.![]() |
您最近一年使用:0次
名校
解题方法
6 .
为椭圆
上一点,
为
的左、右焦点,延长
,
交
于A,B两点、在
中,记
,
,若
,则下列说法中正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2e31f17d3eae2f76500ee2e8f955865.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ac86e1c253297a377e14fb9a1689be8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0739793f234f8e86adc6177801ae7295.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33d776753746914c2410a3946c357f35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44693396245ef7175cd2395bb2c3d95a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/076f439c37c1c6fce8b2c7d10f3693ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa4a3c7847e08eabac3be71b628dbfea.png)
A.![]() ![]() |
B.![]() ![]() |
C.若![]() ![]() ![]() ![]() |
D.![]() |
您最近一年使用:0次
名校
解题方法
7 . 如图是数学家Germinal Dandelin用来证明一个平面截圆锥侧面得到的截口曲线是椭圆的模型(称为“Dandelin双球”).在圆锥内放两个大小不同的小球,使得它们分别与圆锥的侧面、截面相切,截面分别与球
,球
切于点E,F(E,F是截口椭圆C的焦点).设图中球
,球
的半径分别为4和1,球心距
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f919bd3dde10dbbc076f7ec5149699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c4f6f74444b2b7947fc6e35c8d62322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f919bd3dde10dbbc076f7ec5149699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c4f6f74444b2b7947fc6e35c8d62322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3ce6d0376f599ccdec28698d917a688.png)
A.椭圆C的中心不在直线![]() |
B.![]() |
C.直线![]() ![]() |
D.椭圆C的离心率为![]() |
您最近一年使用:0次
2024-03-03更新
|
2447次组卷
|
3卷引用:山东省日照市2024届高三下学期一模数学试题
解题方法
8 . 已知椭圆
的左、右焦点分别为
,
,左、右顶点分别为A,B,上顶点为D,P是E上异于A,B的一个动点,若
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7e5578ca83f5bd5c285994061b9c015.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/cb5b2341a3052a7afab18ac0309269c2.png)
A.E的离心率为![]() | B.直线PA与PB的斜率之积为![]() |
C.满足![]() | D.![]() |
您最近一年使用:0次
2024-02-21更新
|
289次组卷
|
2卷引用:安徽省部分学校2023-2024学年高三下学期春季阶段性检测数学试题
9 . 已知椭圆
的离心率为
,左,右焦点分别为
,
,过
且倾斜角为
的直线与椭圆C交于A,B两点(点A在第一象限),P是椭圆C上任意一点,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.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/ac1a63ab608517bb10aa036783dfb51f.png)
A.a,b满足![]() | B.![]() ![]() |
C.存在点P,使得![]() | D.![]() |
您最近一年使用:0次
名校
解题方法
10 . 已知
,
分别是椭圆
的左、右焦点,如图,过
的直线与C交于点A,与y轴交于点B,
,
,设C的离心率为
,则( )
![](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/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4efa339dbb8c7026b0959971349ae18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77fd6f15bd77332ca6defccf3ebd65c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2024-02-06更新
|
585次组卷
|
4卷引用:河南省信阳市固始县2023-2024学年高二上学期期末考试数学试卷