解题方法
1 . 已知
分别是椭圆
的左、右焦点,Q是椭圆E的右顶点,
,且椭圆E的离心率为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/14/4abf78fe-2e66-48b3-9284-2c0927aed9d9.png?resizew=304)
(1)求椭圆E的方程.
(2)过
的直线交椭圆E于A,B两点,在x轴上是否存在一定点P,使得
,
为正实数.如果存在,求出点P的坐标;如果不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e80aef0c3cea9d23a25a70efca2f706b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/404e0550b1e608ed7cc21a96bcbdb778.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/14/4abf78fe-2e66-48b3-9284-2c0927aed9d9.png?resizew=304)
(1)求椭圆E的方程.
(2)过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae6b610b08e83e5da314bbfcc3579cee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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2023-03-14更新
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6卷引用:甘肃省陇南市2023届高三一模理科数学试题
解题方法
2 . 已知椭圆
的左、右焦点分别为
,
.椭圆
在第一象限存在点
,使得
,直线
与
轴交于点
,且
是
的角平分线,则椭圆
的离心率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/baf66169664c6aeb13d56cf8f12f9d3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d8ad9e94d07405a6be585f81a0d623b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7f2b5b1e9ef7dd60486b550eb4cbec1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/529a103e394bad473d8b130facc9966f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2023-03-09更新
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623次组卷
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4卷引用:甘肃省张掖市2023届高三下学期4月联考数学(理)试题
解题方法
3 . 已知
、
是椭圆上关于原点对称的两点,
是椭圆上任意一点,且直线
、
的斜率分别为
、
(
),若
的最小值为
,则椭圆的离心率为
( ).
![](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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c8ffe24cf9f327aeb241225ab15ab1a.png)
![](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/acde4b2d806af64c062dbcd1d5e3d0b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/169c309a205180d9ac766528dab1be8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47ce2b47812fce4b17fd813d0e4cce21.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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4 . 已知椭圆
的左、右焦点分别为
,
,且经过两点(2,0)和
.
(1)求椭圆C的方程;
(2)P为椭圆上一动点,圆
,以点P为圆心,
为半径作圆P,当圆P与圆O有公共点时,求
的面积的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eec68eeec1d38c8451b3038ab5ff4a74.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/6fe12fb284fc8e2502c9043be594c852.png)
(1)求椭圆C的方程;
(2)P为椭圆上一动点,圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/560adea7b0d4fbe4131fc41f3fcbd871.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0739793f234f8e86adc6177801ae7295.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/002ed1ebb2cb936e10ab478789f91c7c.png)
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解题方法
5 . 设粗圆
的左焦点为F,上顶点为P,离心率为
.O是坐标原点,且
.
(1)求椭圆C的方程;
(2)A、B分别是椭圆长轴的左右两个端点,过点
的直线交椭圆于M、N两点(与A、B均不重合),设直线
的斜率分别是
.讨论
是否为定值,若是求出定值,若不是请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fb92f2947108f372074c8c7d1fa7bc3.png)
(1)求椭圆C的方程;
(2)A、B分别是椭圆长轴的左右两个端点,过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e62ec9eb13c5cfca501ff84357595755.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b14fa212bbddd28310d463fcdef7e62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90963760acac7bfad3ae03088c6c80b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b881044b5c73db6fcce110525741b02.png)
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名校
解题方法
6 . 已知以坐标原点为中心,焦点在坐标轴上的双曲线C过点
,且其中一条渐近线的倾斜角为
,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d5378af6ca2fb9a637c87c1302bef12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76dde16b05fba6fc61779511e63f34fe.png)
A.C的离心率为![]() |
B.双曲线C与椭圆![]() |
C.直线![]() |
D.直线![]() |
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2卷引用:甘肃省永昌县第一高级中学2022-2023学年高二上学期期末考试数学试题
7 .
为椭圆
上一点,曲线
与坐标轴的交点为
,
,
,
,若
,则
到
轴的距离为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdc2518c64be54c16908f868034d8fa7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f44c0aa7f9dbf5217636d35f9947b532.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9785a1a95002dcf8932ea9d693aa4830.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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9卷引用:甘肃省武威市2023届高三第一次联考数学(文)试题
解题方法
8 . 已知椭圆
的离心率为
,双曲线
的离心率为
,两曲线有公共焦点
,P是椭圆与双曲线的一个公共点,
,以下结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc1814ba64f4a9fe8d8ca8e048a33dc2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7b6507c91aa7e8c3598446ff475d8c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f1eb57004b92d3e70df8d0d883744d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c08d599c7d8b3fddf62fe9042d408fa9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d124b231bf2cd3746f35e6c68cd7178f.png)
A.![]() | B.![]() |
C.![]() | D.![]() ![]() |
您最近一年使用:0次
2023-02-14更新
|
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2卷引用:甘肃省庆阳市宁县第二中学2022-2023学年高二上学期期末数学试题
22-23高二上·江苏南通·期末
名校
解题方法
9 . 已知椭圆
的离心率为
,左,右焦点分别为
,
,
为椭圆上一点(异于左,右顶点),且
的周长为6,则下列结论正确的是( )
![](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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33d776753746914c2410a3946c357f35.png)
A.椭圆![]() | B.椭圆![]() ![]() |
C.![]() ![]() | D.椭圆![]() ![]() ![]() |
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2023-01-20更新
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4卷引用:甘肃省天水市甘谷县第四中学2022-2023学年高二上学期期末数学试题
甘肃省天水市甘谷县第四中学2022-2023学年高二上学期期末数学试题(已下线)江苏省南通市如皋市2022-2023学年高二上学期期末数学试题江苏省盐城市实验高级中学2022-2023学年高二下学期期中数学试题浙江省舟山中学2023-2024学年高二上学期第一次素养测评数学试题
10 . 设椭圆
的一个顶点为
分别是椭圆
的左、右焦点,离心率
,过椭圆右焦点
的直线
与椭圆
交于
两点.
(1)求椭圆
的方程;
(2)是否存在直线
,使得
,若存在,求出直线
的方程;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7ac596de49447016476302916eddcca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9c9187ab4738ea0fb7faad266b72610.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.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/7789a500686c7a73770404ead6af0590.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)是否存在直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2ebbb89a7c50ed23e32f1dcad606c30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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