真题
1 . 如图,已知椭圆的中心在坐标原点,焦点
在x轴上,长轴
的长为4,左准线l与x轴的交点为M,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/12/45da7157-f719-4be1-a46b-faa0793cc418.png?resizew=281)
(1)求椭圆的方程;
(2)若直线
,P为
上的动点,使
最大的点P记为Q,求点Q的坐标.(用m表示)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/473913c0887bb64d386f4c02f1853452.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1a84078a887dcdb4eb4f7bbe7c2e23e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/12/45da7157-f719-4be1-a46b-faa0793cc418.png?resizew=281)
(1)求椭圆的方程;
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b5de09440bdcbe063ec731237b4c3c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94fe48bf7af022ecbbe13833fdcc2c8.png)
您最近一年使用:0次
真题
2 . 椭圆的中心为点
,它的一个焦点为
,相应于焦点F的准线方程为
,则这个椭圆的方程是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67c2c1fb76064ec624712cd818f07e94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fccf33cede6bc8c8794b48f5831c4e27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cac6b2aadade55910b7a544d1bde9e4.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
名校
3 . 如图,
、
分别是椭圆的左顶点和上顶点,从椭圆上一点
向
轴作垂线,垂足为右焦点
,且
,点
到右准线的距离为
,则椭圆方程为( )
![](https://img.xkw.com/dksih/QBM/2022/2/19/2919962070900736/2925342295203840/STEM/da977351-1b1b-4c3a-9c73-aeab45d5f53f.png?resizew=192)
![](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/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd3462c2ed8cf90fd7cb391c38bbe6aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://img.xkw.com/dksih/QBM/2022/2/19/2919962070900736/2925342295203840/STEM/da977351-1b1b-4c3a-9c73-aeab45d5f53f.png?resizew=192)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2022-02-27更新
|
413次组卷
|
2卷引用:江苏省南通市海门中学2021-2022学年高二上学期期末数学试题
名校
解题方法
4 . 在平面直角坐标系
中,已知椭圆
的右准线为
(定义:椭圆C的右准线方程为
,其中
).点P是右准线上的动点,过点P作椭圆C的两条切线,分别与y轴交于M,N两点.当P在x轴上时,
.
(1)求椭圆C的方程;
(2)求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/495bb3e5a3a9d35f5c9f0cf1f5d51876.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fa5d6092f598c7da4796f965e40525a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57654bf131df03b31d3d11b5b656c73d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d0262f2ec5417a4458f30b19c732f21.png)
(1)求椭圆C的方程;
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac35b1e8a952aac4f4cdaaf02d868d04.png)
您最近一年使用:0次
2021-12-23更新
|
558次组卷
|
6卷引用:山西省运城高中教育发展联盟2022届高三上学期12月阶段性检测文科数学试题
山西省运城高中教育发展联盟2022届高三上学期12月阶段性检测文科数学试题山西省运城高中教育发展联盟2022届高三上学期12月阶段性检测理科数学试题山西省吕梁市名校金科大联考2022届高三上学期12月月考数学(文)试题山西省吕梁市名校金科大联考2022届高三上学期12月月考数学(理)试题湖南省三湘名校教育联盟2021-2022学年高三上学期第二次大联考数学试题(已下线)专题10.6—圆锥曲线—椭圆大题(取值范围问题)—2022届高三数学一轮复习精讲精练
21-22高二上·江苏南通·阶段练习
解题方法
5 . 已知椭圆
的长轴长为
,右焦点到右准线的距离为
.
(1)求椭圆的方程;
(2)若直线
与椭圆交于
,
两点,椭圆上存在点
,使得
,求实数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
(1)求椭圆的方程;
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb9a905247d151e281c98fc2bc63a732.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae287dfe3c146e053835d29c839cdf30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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名校
解题方法
6 . 与椭圆
(
,
且
)相关的两条直线
称为椭圆
的准线,拥有丰富的几何性质. 已知直线
是位于椭圆
右侧的一条准线,椭圆上的点到
的距离的最大值为
,最小值为
.
(1)求椭圆
的标准方程及直线
的方程;
(2)设椭圆
的左右两个顶点分别为
,
,
为直线
上的动点,且
不在
轴上,
与
的另一个交点为
,
与
的另一个交点为
,
为椭圆
的左焦点,求证:
的周长为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7d72a07a4e5acfc140a3cea1f26b951.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0c4c098615c6bc7e6dcf72e5b5201a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cec12441802f71e803efaf2c62ee588.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/671241e869118e81afc8cc427d24fe22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9687dfe1247fd7ff48389de273b16038.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8c4c029e552954bd493b49aeab82d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(2)设椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e463e661d45282d927b7596d5ad3b1d.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/cd3896bb7e10246b3b8c33da4c500762.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecfb02e157819a2bdd0f2790cbc825e9.png)
您最近一年使用:0次
7 . 如图,在平面直角坐标系xOy中,椭圆C:
+
=1(a>b>0)的左顶点为A,B是椭圆C上异于左、右顶点的任意一点,P是AB的中点,过点B且与AB垂直的直线与直线OP交于点Q,已知椭圆C的离心率为
,点A到右准线的距离为6.
![](https://img.xkw.com/dksih/QBM/2020/12/11/2611942147727360/2616136560918528/STEM/522e8d95-8694-44d0-99f9-7d4da69d8aa4.png)
(1)求椭圆C的标准方程;
(2)设点Q的横坐标为x0,求x0的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7355be4fcbc3130a5951364a3be76d6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5268413295580cfda0755ab458b36b64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://img.xkw.com/dksih/QBM/2020/12/11/2611942147727360/2616136560918528/STEM/522e8d95-8694-44d0-99f9-7d4da69d8aa4.png)
(1)求椭圆C的标准方程;
(2)设点Q的横坐标为x0,求x0的取值范围.
您最近一年使用:0次
解题方法
8 . 已知椭圆
的右焦点为
,右准线为
.过点
作与坐标轴都不垂直的直线与椭圆
交于
,
两点,线段
的中点为
,
为坐标原点,且直线
与右准线
交于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/2e996226-d6d1-4f3d-b5ff-ceff7b52c511.png?resizew=220)
(1)求椭圆
的标准方程;
(2)若
,求直线
的方程;
(3)是否存在实数
,使得
恒成立?若存在,求实数
的值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7e5578ca83f5bd5c285994061b9c015.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2254f7a85430f9c0b1adf193318dbf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/495bb3e5a3a9d35f5c9f0cf1f5d51876.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf3369e0ea90e8d5cf4b6b3c45c0fd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/2e996226-d6d1-4f3d-b5ff-ceff7b52c511.png?resizew=220)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84cc0a4210ee0f08f8f3aa7e31691b34.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(3)是否存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3a2dea30078f0d14d0ad7347a573228.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
9 . 如图,在平面直角坐标系
中,已知
两点分别为椭圆
的右顶点和上顶点,且
,右准线
的方程为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/29/d3a3ffe7-90d9-47f8-bc82-97b34888b24f.png?resizew=173)
(1)求椭圆的标准方程;
(2)过点
的直线交椭圆于另一点
,交
于点
.若以
为直径的圆经过原点,求直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0505bcf8d72d3cd49988871eb6cfade0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba56b41fe702d9b6433e4d01e48d69a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f23d29646155e27b172ecdf263e2d702.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/29/d3a3ffe7-90d9-47f8-bc82-97b34888b24f.png?resizew=173)
(1)求椭圆的标准方程;
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
您最近一年使用:0次
2020-04-06更新
|
382次组卷
|
2卷引用:江苏省南通市海安市2019-2020学年高三下学期3月月考数学试题
10 . 在平面直角坐标系中,已知椭圆C:
(a>b>0)的离心率为
,右焦点F到右准线的距离为3.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/7/21641faa-d57b-4687-85f9-7b56021d3386.png?resizew=182)
(1)求椭圆C的方程;
(2)过点F作直线l (不与x 轴重合)和椭圆C交于M, N两点,设点
.
①若
的面积为
,求直线l方程;
②过点M作与)轴垂直的直线l"和直线NA交于点P,求证:点P在一条定直线上.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/7/21641faa-d57b-4687-85f9-7b56021d3386.png?resizew=182)
(1)求椭圆C的方程;
(2)过点F作直线l (不与x 轴重合)和椭圆C交于M, N两点,设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3124b04b105a0a16a8c41ac0ce97ec0.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98013a5042685a1db94249e70c62c09a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1835bb5817777469e4ed7fc722a09d5e.png)
②过点M作与)轴垂直的直线l"和直线NA交于点P,求证:点P在一条定直线上.
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