名校
解题方法
1 . 已知椭圆
的右焦点为
,过点F且垂直于x轴的直线与椭圆相交所得的弦长为2.
(1)求椭圆C的方程;
(2)过椭圆内一点P(0,t),斜率为k的直线l交椭圆C于M,N两点,设直线OM,ON(O为坐标原点)的斜率分别为k1,k2,若对任意k,存在实数λ,使得
,求实数λ的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b707fdf035eb2fb4467958893c60381f.png)
(1)求椭圆C的方程;
(2)过椭圆内一点P(0,t),斜率为k的直线l交椭圆C于M,N两点,设直线OM,ON(O为坐标原点)的斜率分别为k1,k2,若对任意k,存在实数λ,使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0f20d16994a1f0f00df3c9169e352c2.png)
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4卷引用:重庆市第七中学2021届高三上学期第一次月考数学试题
名校
解题方法
2 . 已知椭圆标准方程为
,离心率为
且过点
,直线
与椭圆交于
、
两点且不过原点.
(1)求椭圆方程;
(2)若直线
、
、
的斜率依次成等比数列,求
面积的取值范围.
![](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/913f78382630e50543e5f7192cae3ed3.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/acc290b44635265137fdf13146b6a6d9.png)
(1)求椭圆方程;
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f0009063fe00277645aff1be6e32471.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea1f0417d8269f01d8e0bc1a8756e2ac.png)
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解题方法
3 . 已知双曲线
的离心率为
,且其顶点到其渐近线的距离为
.
(1)求双曲线的标准方程;
(2)直线
:
与双曲线交于
,
两点,若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3040b6c904477030ecf8ba20b2b18759.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/047616f1d1d39bf6c3cd07cf63ef5b80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be0a31202a7a69d530c05a75229e6ea6.png)
(1)求双曲线的标准方程;
(2)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce37928403e28dea457850542edd414.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/5ccc3e8a231ee7f642eaccb3ae150982.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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4 . 椭圆短轴的两端点为
,
,过其左焦点
作
轴的垂线交椭圆于点
,若
是
和
的等比中项(
为中心),则
等于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43a71fc9c0068109dad1382354570665.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.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/5f65a2af5e4826b5143de3a1e165f914.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bb6bc32483b9b7049dd49bb25c99c78.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c40f1ab2df28d52e864f9fa7fd63a91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14b8d8f38789cb08fedd3612acfe718a.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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名校
解题方法
5 . 2020年11月24日,我国在中国文昌航天发射场,用长征五号遥五运载火箭成功发射探月工程嫦娥五号探测器,它将首次带月壤返回地球,我们离月球的“距离”又近一步了.已知点
,直线
,若某直线上存在点
,使得点
到点
的距离比到直线
的距离小1,则称该直线为“最远距离直线”,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc4dcf995648a8e31b8b6cfbc7970071.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b556b1a9944719cf423e90f8df16c773.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
A.点![]() |
B.![]() |
C.![]() |
D.点![]() ![]() ![]() ![]() ![]() |
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解题方法
6 . 已知直线
,圆
,直线
被圆截得的弦长与椭圆
的短轴长相等,椭圆的离心率
.
(1)求椭圆
的方程;
(2)过点
的动直线
交椭圆
于
,
两点,试问:在坐标平面上是否存在一个定点
,使得无论
如何转动,以
为直径的圆恒过定点
?若存在,求出点
的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06553b7e77205d053c1981e9c050d579.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdcbaa80a48affc347be5a1bb5079a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/075ba8c6fb5ef7288cd3fed425c8e69e.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65db147d6a758f7bc2f9cff5f3b347ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.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/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
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4卷引用:2016届重庆市第一中学高三12月月考理科数学试卷
名校
7 . 已知倾斜角是
的直线l过抛物线
的焦点F,且与抛物线交于A,B两点,则弦长![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88bee8e70f1fab639be1636c7bce0477.png)
_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88bee8e70f1fab639be1636c7bce0477.png)
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4卷引用:江苏省镇江市句容中学2020-2021学年高二10月份月考数学试题
名校
解题方法
8 . 已知椭圆
的右焦点为
,点
在椭圆
上.
(1)求椭圆
的方程;
(2)过点
且斜率大于
的直线
与椭圆
相交于不同的两点
和
,直线
、
分别交
轴于
、
两点,记
、
的面积分别为
、
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef6b94e42869013745050aba059b58dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77d0ad17b2a31609477615424d2c58ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5516da98949f4528c7399e4274c34482.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38b6c9d7a8561a43bad7fb09c0ddc4c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c95b6be4554f03bf496092f1acdfbb89.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.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/81dea63b8ce3e51adf66cf7b9982a248.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/7dc2a47750d93b4faed6d66cea09f671.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a466898fbc4d2f5d89cdddd0feabb25.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db7caffa285fbdbb51a0373b3654486c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6801133970b88d5b8340bc59f79fec0.png)
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5卷引用:四川省成都市蓉城名校联盟2020-2021学年高二上学期期末联考理科数学试题
9 . 如图,从椭圆
(
)上一点P向x轴作垂线,垂足恰为左焦点F1,又点A是椭圆与x轴正半轴的交点,点B是椭圆与y轴正半轴的交点,且AB
OP,
.其中F2为椭圆的右焦点.
![](https://img.xkw.com/dksih/QBM/2021/1/18/2638910636384256/2640443737825280/STEM/07a28368-81f2-40a8-9e29-bdc0ef111047.png)
(1)求椭圆的方程E;
(2)是否存在圆心在原点的圆,使得该圆的任意一条切线与椭圆E恒有两个交点C,D且OC⊥OD?若存在,写出该圆方程,并求CD的取值范围;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0c4c098615c6bc7e6dcf72e5b5201a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb31ef428bd9de9bc875b343feded3c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2eb39f647cf2007b150c754e4156e302.png)
![](https://img.xkw.com/dksih/QBM/2021/1/18/2638910636384256/2640443737825280/STEM/07a28368-81f2-40a8-9e29-bdc0ef111047.png)
(1)求椭圆的方程E;
(2)是否存在圆心在原点的圆,使得该圆的任意一条切线与椭圆E恒有两个交点C,D且OC⊥OD?若存在,写出该圆方程,并求CD的取值范围;若不存在,说明理由.
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2021-01-20更新
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3卷引用:安徽省池州市第一中学2020-2021学年高二上学期12月月考数学(理)试题
名校
解题方法
10 . 已知三角形
的三个顶点都在椭圆:
上,设它的三条边
,
,
的中点分别为
,
,
,且三条边所在线的斜率分别为
,
,
,且
,
,
均不为0.
为坐标原点,若直线
,
,
的斜率之和为1.则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cae00bdc6f8b564b6b15b32572c848b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.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/dbf434334b09cc0fdd4e86e84e6ceb00.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/dbf434334b09cc0fdd4e86e84e6ceb00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/683c590673eece14fea3319c4fd5eb55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a299d2b999568e80be8005565ba209a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf3369e0ea90e8d5cf4b6b3c45c0fd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dddcb841e17cc8df9c1aa78bc1b12c1.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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6卷引用:安徽省安庆市第一中学2019-2020学年高二上学期期末数学(文)试题
安徽省安庆市第一中学2019-2020学年高二上学期期末数学(文)试题安徽省安庆市第一中学2019-2020学年高二上学期期末考试数学(理)试题重庆市第八中学2021-2022学年高二上学期第一次月考数学试题上海市复旦大学附属中学2020-2021学年高二上学期期末数学试题(已下线)专题5.4 期末考前必做30题(选择题提升版)-2020-2021学年高二数学下学期期末专项复习(沪教版)(已下线)专题11 圆锥曲线第三定义与点差法 微点2 圆锥曲线中点弦问题与点差法