12-13高二上·安徽·期末
1 . 如图,已知椭圆
过点.
,离心率为
,左、右焦点分别为
、
.点
为直线
上且不在
轴上的任意一点,直线
和
与椭圆的交点分别为
、
和
、
,
为坐标原点.
(I)求椭圆的标准方程;
(II)设直线
、
的斜线分别为
、
. 证明:![](https://img.xkw.com/dksih/QBM/2012/2/24/1570770461794304/1570770467323904/STEM/2fa5979f20174ea59f08c54452406195.png)
![](https://img.xkw.com/dksih/QBM/2012/2/24/1570770461794304/1570770467323904/STEM/c13c666eb18c4d59ae5766bf3d8cdc44.png)
![](https://img.xkw.com/dksih/QBM/2012/2/24/1570770461794304/1570770467323904/STEM/a297a7eaa7cb4e0aa2e4c7cde9cd39ef.png)
![](https://img.xkw.com/dksih/QBM/2012/2/24/1570770461794304/1570770467323904/STEM/932cb7385de340ff855e8bccbe64c490.png)
![](https://img.xkw.com/dksih/QBM/2012/2/24/1570770461794304/1570770467323904/STEM/f182c6667a6148bdbf398f66b01a7bd8.png)
![](https://img.xkw.com/dksih/QBM/2012/2/24/1570770461794304/1570770467323904/STEM/05c7968f5ff0400180745e880496fb80.png)
![](https://img.xkw.com/dksih/QBM/2012/2/24/1570770461794304/1570770467323904/STEM/7380744f5ca54f2d81b3ffb2d9d7baa0.png)
![](https://img.xkw.com/dksih/QBM/2012/2/24/1570770461794304/1570770467323904/STEM/23cf897bda8e4c838d223c878c7f4ed6.png)
![](https://img.xkw.com/dksih/QBM/2012/2/24/1570770461794304/1570770467323904/STEM/61c304cb75664d2ea77384db12c32fdb.png)
![](https://img.xkw.com/dksih/QBM/2012/2/24/1570770461794304/1570770467323904/STEM/90f8cc91aca24bad9eb6443f135e566d.png)
![](https://img.xkw.com/dksih/QBM/2012/2/24/1570770461794304/1570770467323904/STEM/27978f85449049c590153797cf6ec0b3.png)
![](https://img.xkw.com/dksih/QBM/2012/2/24/1570770461794304/1570770467323904/STEM/a1d3819a563545e8a620b091b623e80d.png)
![](https://img.xkw.com/dksih/QBM/2012/2/24/1570770461794304/1570770467323904/STEM/bb1846738fbd42ba8d9fcdb982c0d7a7.png)
![](https://img.xkw.com/dksih/QBM/2012/2/24/1570770461794304/1570770467323904/STEM/cbe37c847f434416a20c247dfff95f60.png)
![](https://img.xkw.com/dksih/QBM/2012/2/24/1570770461794304/1570770467323904/STEM/fc33c79465fa4d23b6be377b892c2eae.png)
![](https://img.xkw.com/dksih/QBM/2012/2/24/1570770461794304/1570770467323904/STEM/1f79c14c02ac493e925ab7ecc2b30894.png)
(I)求椭圆的标准方程;
(II)设直线
![](https://img.xkw.com/dksih/QBM/2012/2/24/1570770461794304/1570770467323904/STEM/90f8cc91aca24bad9eb6443f135e566d.png)
![](https://img.xkw.com/dksih/QBM/2012/2/24/1570770461794304/1570770467323904/STEM/27978f85449049c590153797cf6ec0b3.png)
![](https://img.xkw.com/dksih/QBM/2012/2/24/1570770461794304/1570770467323904/STEM/4c3cf14cb52d4fcfa838ba667b81873d.png)
![](https://img.xkw.com/dksih/QBM/2012/2/24/1570770461794304/1570770467323904/STEM/85ef918dd45d48248adef869ae29034d.png)
![](https://img.xkw.com/dksih/QBM/2012/2/24/1570770461794304/1570770467323904/STEM/2fa5979f20174ea59f08c54452406195.png)
![](https://img.xkw.com/dksih/QBM/2012/2/24/1570770461794304/1570770467323904/STEM/476245e6f4274433ae5e1af4191e3e5b.png)
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解题方法
2 . 已知椭圆
的焦点在
轴上,离心率等于
,且过点
.
(1)求椭圆
的标准方程;
(2)过椭圆
的右焦点
作直线
交椭圆
于
,
两点,交
轴于
点,若
,
,求证:
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9868f77d5ab5073b6145f1c6d272122e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fae6a60807d8e3e39359e8abc92aa7f0.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25615c59b61f9e297f2a9054cce4d718.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8243aa5ddb0fbf9e98f019de7a5ea810.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b226a23564f8e47eaa0bd8b2bbc9907.png)
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13-14高二上·安徽池州·期中
3 . 已知
为两个不相等的非零实数,则方程
与
所表示的曲线可能是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/280860dd039e1305a5ccc455f63e8223.png)
![](https://img.xkw.com/dksih/QBM/2014/1/3/1571457209475072/1571457215070208/STEM/a77b382cceba4968b1041564bc8734da.png?resizew=96)
![](https://img.xkw.com/dksih/QBM/2014/1/3/1571457209475072/1571457215070208/STEM/0a0008baa27743ebafd2c820a8413b98.png?resizew=108)
A.![]() | B.![]() |
C.![]() | D.![]() |
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名校
4 . 写出满足下列条件的椭圆的标准方程:
(1)焦点为
,过点
;
(2)过点
与点
.
(1)焦点为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59f9eeadd38d644c9af1d3c60addf6c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4188d50bd645a6fa016e33e1178c114e.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fad20e2bc6576fc461419f8f138d26e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8cdbaa4eca3b791c82c71f2d5d68104.png)
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11-12高二上·安徽·期末
5 . 已知椭圆中心在原点,焦点在x轴上,离心率
,过椭圆的右焦点且垂直于长轴的弦长为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
(1)求椭圆的标准方程;
(2)已知直线l与椭圆相交于P、Q两点,O为原点,且OP⊥OQ.试探究点O到直线l的距离是否为定值?若是,求出这个定值;若不是,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/075ba8c6fb5ef7288cd3fed425c8e69e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
(1)求椭圆的标准方程;
(2)已知直线l与椭圆相交于P、Q两点,O为原点,且OP⊥OQ.试探究点O到直线l的距离是否为定值?若是,求出这个定值;若不是,说明理由.
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解题方法
6 . 已知椭圆
:
过点
和点
.
(1)求椭圆
的方程;
(2)直线
:
与椭圆
交于两个不同点
、
,已知
关于原点
的对称点为
,
关于
轴的对称点为
,若
,
,
三点共线,试问直线
是否经过定点,如果是,求出该点;否则,说明原因.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eed6b9540857e386651e191a0a5b5a98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/888a6b10db4d81e5d2ba969fb576bd78.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3ad7c7eb3dfda76ed53c5f65e583b4c.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/15b256345d7109e081b7c895591e995d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cee6765a83140d745a6de4c85d9b6b50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a42da28be159399514cc6179a96e34b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cee6765a83140d745a6de4c85d9b6b50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a42da28be159399514cc6179a96e34b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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名校
7 . 已知椭圆
:
的离心率为
,
,
分别是椭圆的左、右焦点,
为椭圆上除长轴端点外的任意一点,且
的周长为
.
(1)求椭圆
的方程;
(2)过点
作直线
与椭圆
交于
两点,点
满足
(
为原点),求四边形
面积的最大值,并求此时直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b42fc33bcfc63ec2f4940ccd3f862400.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb8fb6f3d7540831a9e97d3b184a491.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c6b1ca85ab21ca36d4e4893411119a5.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/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20b836c91b4d8447b5ce63e0a93cc0d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e22bca838bac6ba107da9c05705e93bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
您最近一年使用:0次
2017-03-24更新
|
44次组卷
|
2卷引用:安徽省宣城市第三中学2020-2021学年高二上学期第三次月考数学(文)试题