20-21高三下·河南·开学考试
名校
解题方法
1 . 已知
,
为椭圆
:
的左、右顶点,
是椭圆
上一点(异于
,
),满足
,且
.斜率为
的直线
交椭圆
于
,
两点,且
.
![](https://img.xkw.com/dksih/QBM/2021/2/21/2662707984818176/2662720268197888/STEM/4a7f4f67-024f-41f7-b4c7-db52220cc669.png?resizew=266)
(1)求椭圆
的方程及离心率;
(2)如图,设直线
:
与椭圆
交于
,
两点,求四边形
面积的最大值.
![](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/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.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/25906059ac577f4cd504240b1e665ac6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f08ce80e91fdf435a8e3ec05be990e9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.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/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ad1447cbaf2eb53f06530e0941abef1.png)
![](https://img.xkw.com/dksih/QBM/2021/2/21/2662707984818176/2662720268197888/STEM/4a7f4f67-024f-41f7-b4c7-db52220cc669.png?resizew=266)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)如图,设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54479885d4ab2f717d2e97718da04b43.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/9ebc26aaf41c3f55d2408f13e08e09a2.png)
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2021-02-21更新
|
125次组卷
|
4卷引用:河南省部分学校2020-2021学年高三下学期开学检测数学(文科)试题
(已下线)河南省部分学校2020-2021学年高三下学期开学检测数学(文科)试题广东省佛山市顺德区2021届高三上学期第三次教学质量检测数学试题福建省上杭县第一中学2021届高三下期期初考试数学试题贵州省黔南州瓮安第二中学2020-2021学年高二下学期第一次月考数学(理)试题
2 . 已知
动点
满足
,动点
的轨迹为曲线
.
(1)求点
的轨迹方程;
(2)过
作圆
的切线,切线与曲线
交于
两点,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ad3483820a1073761241f361e661b7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f595683f69d5d6b5ca76408b0ff6ff17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
(1)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(2)过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2afa64955b87a2425d1e2d36f3317c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cf558851e74e0f180fb47ad53852098.png)
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3 . 设C点为圆
上的动点,点C在x轴上的投影为D.动点P满足
,动点P的轨迹为E.
(1)求E的方程;
(2)
,点S是E上位于x轴上方的动点,直线AS,BS与直线l:
分别交于M,N两点,求
面积的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5f5d967ad135991b6075ee45df55643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0104157c36c0eac3d905ce9a0bc4d025.png)
(1)求E的方程;
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea144751094669b9f4945a8b35a1b79a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e55aa0a20848c37c1892c567b2315e04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25dd698d57d1cf239eb8752aecaaa4f4.png)
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解题方法
4 . 已知动圆
与圆
相内切,且与圆
相内切,记圆心
的轨迹为曲线
.
(1)求曲线
的方程:
(2)直线
与曲线
交于点
、
,点
为线段
的中点,若
,
为坐标原点,求
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a1e880a1af43740f8e9488c5f3735f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38e8b3e4e0d44264562b79f20406d436.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)求曲线
![](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/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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e00eb9ed89b33f218fbdff9b76a8cd17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
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解题方法
5 . 在平面直角坐标系
中,已知点
到两点
的距离之和等于
,设点
的轨迹为曲线
.
(1)求曲线
的方程.
(2)若直线
与曲线
有公共点,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/153bc9d50e59b62d042a8cb512fb025f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02ebce8b2a915356ed39f36c5bad2ebe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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2021-02-08更新
|
1241次组卷
|
7卷引用:广东省广州市海珠区2020-2021学年高二上学期期末联考数学试题
广东省广州市海珠区2020-2021学年高二上学期期末联考数学试题(已下线)2.1 曲线与方程(基础练)-2021-2022学年高二数学同步训练精选新题汇编(人教A版选修2-1)(已下线)专题13 圆锥曲线常考题型01——直线与圆锥曲线的位置关系中的常见问题及求解策略-【重难点突破】2021-2022学年高二数学上册常考题专练(人教A版2019选择性必修第一册)(已下线)3.1.2 椭圆的简单几何性质(精讲)-2021-2022学年高二数学一隅三反系列(人教A版2019选择性必修第一册)四川省自贡成都外国语学校2021-2022学年高二下学期第一次月考数学(文)试题陕西省渭南市蒲城县2020-2021学年高二下学期期末对抗赛理科数学试题陕西省渭南市蒲城县2020-2021学年高二下学期期末对抗赛文科数学试题
名校
6 . 如图,
轴,垂足为D,点M在DP的延长线上,且
,当点P在圆
上运动时,求点M的轨迹方程,并说明轨迹的形状.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ea1cdf62cac33194e615d5640f70f7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79d73e68da8ace2a7d423fa2cbfc5227.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5f5d967ad135991b6075ee45df55643.png)
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|
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6卷引用:人教A版(2019) 选择性必修第一册 新高考名师导学 第三章 3.1 椭圆
人教A版(2019) 选择性必修第一册 新高考名师导学 第三章 3.1 椭圆(已下线)3.1.1 (分层练)椭圆及其标准方程 -2021-2022学年高二数学考点同步解读与训练(人教A版2019选择性必修第一册)(已下线)3.1.1 (整合练)椭圆及其标准方程-2021-2022学年高二数学考点同步解读与训练(人教A版2019选择性必修第一册)(已下线)3.1 椭圆广东省佛山市南海区九江中学2021-2022学年高二上学期第二次大测(月考)数学试题人教A版(2019)选择性必修第一册课本习题 习题 3.1
7 . 如果点
在运动过程中,总满足关系式
,那么点M的轨迹是什么曲线?为什么?写出它的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45ff7e0ef1f622120cc1b18e9d3e80ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/763eeb9cd1916a6c2752c645fc8d277c.png)
您最近一年使用:0次
2021-02-06更新
|
1221次组卷
|
4卷引用:人教A版(2019) 选择性必修第一册 新高考名师导学 第三章 3.1 椭圆
人教A版(2019) 选择性必修第一册 新高考名师导学 第三章 3.1 椭圆(已下线)3.1.1 (分层练)椭圆及其标准方程 -2021-2022学年高二数学考点同步解读与训练(人教A版2019选择性必修第一册)(已下线)3.1 椭圆人教A版(2019)选择性必修第一册课本习题 习题 3.1
名校
解题方法
8 . 已知点A、B坐标分别是
,
,直线AP、BP相交于点P,且它们斜率之积是
.
(1)试求点P的轨迹
的方程;
(2)已知直线
,过点
的直线(不与x轴重合)与轨迹
相交于M.N两点,过点M作
于点D.求证:直线ND过定点,并求出定点的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0416737c6c830448efdabb1c66d746ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a2cf93ce94db02356a1429cacc74dbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3389f53711264b0acba3ba6019f8b908.png)
(1)试求点P的轨迹
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
(2)已知直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6261e2ccfee2e4df6e1f2021de5da27e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/030700126fb012f13935f57780b96677.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f41b099305c768388cfae01e18efcab6.png)
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2021-02-06更新
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541次组卷
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2卷引用:湖北省宜昌市2020-2021学年高三上学期2月联考数学试题
解题方法
9 . 已知D为圆
上一动点,过点D分别作x轴y轴的垂线,垂足分别为
,连接
延长至点P,使得
,点P的轨迹记为曲线C.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/28/9dc8a286-6a24-475a-9752-203cf98d5c0b.png?resizew=179)
(1)求曲线C的方程;
(2)作圆O的切线交曲线C于
两点,Q为曲线C上一动点(点
分别位于直线
两侧),求四边形
的面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/560adea7b0d4fbe4131fc41f3fcbd871.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dea2ae9d515f9ab351ad72306b776ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8daf17262bbe72c7cc5319a1882e91b9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/28/9dc8a286-6a24-475a-9752-203cf98d5c0b.png?resizew=179)
(1)求曲线C的方程;
(2)作圆O的切线交曲线C于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/255444ad695ee3b132aa0fcb6dc134cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe3174b77e624cd0fdb730bbe00322f.png)
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解题方法
10 . 已知圆
,圆
,动圆
与圆
外切且与圆
内切,设圆心
的轨迹为曲线
.
(1)求
的方程;
(2)若
,
是曲线
上的动点,且直线
过点
,问在
轴上是否存在定点
.使得
(
为坐标原点).若存在,请求出定点
的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4f0fbf759e24e01943400d17a1fbf13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52c4ecee602398d6bfd25d3713ae984d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若
![](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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bdfbae913ff7ff8caaefcaacf8c20ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62af66af364130bfa1690702db302c75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
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