名校
解题方法
1 . 已知椭圆
:
的左焦点为
,左、右顶点分别为
,
,上顶点为
.
(1)若
为直角三角形,求
的离心率;
(2)若
,
,点
,
是椭圆
上不同两点,试判断“
”是“
,
关于
轴对称”的什么条件?并说明理由;
(3)若
,
,点
为直线
上的动点,直线
,
分别交椭圆
于
,
两点,试问
的周长是否为定值?请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.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/dad2a36927223bd70f426ba06aea4b45.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bedc0265576eb4ccbd2a592d7af395dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a3c442579603164f3fc19458677d307.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a42da28be159399514cc6179a96e34b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df18111e69d56c707c11af99fe556e1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a42da28be159399514cc6179a96e34b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5742b2684d00be50a66e01c9acb6b51f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f23d29646155e27b172ecdf263e2d702.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e98c4b3f3fe826e124ca7d199d4ca4b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/817a419430d9951cbdb89b657b21bcf0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.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/e1e9b8a991d00fdd2810dda7adc54fd8.png)
您最近一年使用:0次
2023-05-29更新
|
469次组卷
|
2卷引用:上海市金山中学2022-2023学年高二下学期期末数学试题
2 . 已知曲线
,
在点
处的切线为
,若曲线
上存在异于
的点
,使曲线
在点
处的切线
与
重合,则称
为曲线
关于
的“公切点”;若曲线
上存在
,使曲线
在
处的切线
与
垂直,则称
为曲线
关于
的“正交点”.
(1)求曲线
关于
的“正交点”;
(2)若
,
,已知曲线
上存在关于
的“正交点”,求
的取值集合;
(3)已知
,若对任意
,曲线
上都存在关于
的“正交点”,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e02cab1add26335b3cb43d5b54c7c853.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afd3ffc5e95e5f22723402501c9916b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c34517f479fb08f6096d2fb0362f3ad0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ab7295ee5ddbc64eea2d5b2f8661e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c34517f479fb08f6096d2fb0362f3ad0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94949c1f99caaf46fa29a1ab9080d7be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c34517f479fb08f6096d2fb0362f3ad0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2384cdb8ca10c63ed1106b5efaa4d824.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f54dd475ff1321041c80738b201c3b6.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e5ed9a1bbebe7e13a6f651d0c57abe8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b604c6522119e77c1cb16b91532a2c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afd3ffc5e95e5f22723402501c9916b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
(3)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bdc035b2c9a2e4ae7b910cae8114a0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccbea3e3a4121ed56bd5a355b4ff5b78.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afd3ffc5e95e5f22723402501c9916b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
解题方法
3 . 把右半个椭圆
和圆弧
合成的封闭曲线
称为“曲圆”,“曲圆”与
轴的左、右交点依次记为
、
,与
轴的上、下交点依次记为
、
,过椭圆的右焦点
的直线
与“曲圆”交于
、
两点.
(1)当点
与
重合时,求
的周长;
(2)当
、
两点都在半椭圆
时,是否存在以
为直径的圆恰好经过点
?若存在,求出直线
的方程,若不存在,请说明理由;
(3)当点
在第一象限时,求
的面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62d5972fc8da1e12b427808756fc9092.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dfe2da800cc97696fa876b1566c10ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.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/d053b14c8588eee2acbbe44fc37a6886.png)
![](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/a0ed1ec316bc54c37c4286c208f55667.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)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/11/7fe3d6fa-052a-4cb8-b046-ccfca5af9d77.png?resizew=190)
(1)当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43a71fc9c0068109dad1382354570665.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8ef68c72248af27e3b83b4ee5fdeb51.png)
(2)当
![](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/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(3)当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8ef68c72248af27e3b83b4ee5fdeb51.png)
您最近一年使用:0次
名校
解题方法
4 . 设函数
,其中a为常数.对于给定的一组有序实数
,若对任意
、
,都有
,则称
为
的“和谐数组”.
(1)若
,判断数组
是否为
的“和谐数组”,并说明理由;
(2)若
,求函数
的极值点;
(3)证明:若
为
的“和谐数组”,则对任意
,都有
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8beb896a3c01154585e0ec979934f602.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/911f2e62e650373b98e1b76fb8a8b24e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33890c6b0bf167514d44139d9dca0154.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/774ac39e474f9c5f4e17a4c0416413cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/911f2e62e650373b98e1b76fb8a8b24e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87b6a9ffffc0c461881b427c543924cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27e7c12bff76b3a3151dc3e392c60d53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(3)证明:若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/911f2e62e650373b98e1b76fb8a8b24e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3af0614daffb549e1adc7c24a5bbdf42.png)
您最近一年使用:0次
2023-05-11更新
|
721次组卷
|
4卷引用:上海市金山中学2022-2023学年高二下学期期末数学试题
2022·上海浦东新·模拟预测
名校
5 . 已知平面直角坐标系中的直线
、
.设到
、
距离之和为
的点的轨迹是曲线
,到
、
距离平方和为
的点的轨迹是曲线
,其中
.则
、
公共点的个数不可能为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4073d527d4b14759a7cbaeabfb35a756.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d9fc68d6d88485e65bfc599dfdde547.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a8ef3f4a8e843a79c3b03adeb61adab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e85963eb36e1406ca2dfd1d039fbeaea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86363d72a870d73f2ecd70a87043fd58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
A.0个 | B.4个 | C.8个 | D.12个 |
您最近一年使用:0次
2022-07-05更新
|
1624次组卷
|
9卷引用:上海市金山中学2022-2023学年高二上学期期末数学试题
上海市金山中学2022-2023学年高二上学期期末数学试题(已下线)3.1.1 椭圆的标准方程-2022-2023学年高二数学《基础·重点·难点 》全面题型高分突破(苏教版2019选择性必修第一册)(已下线)核心考点04抛物线、曲线与方程(3)(已下线)上海市华东师范大学第二附属中学2022届高三考前模拟数学试题(已下线)专题26 求动点轨迹方程 微点7 求动点轨迹方程综合训练(已下线)第12讲 直线和圆的方程-3(已下线)考向32 椭圆(重点)(已下线)专题19 圆锥曲线 (练习)-2(已下线)专题19 圆锥曲线 (模拟练)-2
解题方法
6 . 国家体育场“鸟巢”的钢结构鸟瞰图如图1所示,内外两圈的钢骨架是离心率相同的椭圆;某校体育馆的钢结构与“鸟巢”相同,其平面图如图2所示,若由外层椭圆长轴一端点
和短轴一端点
分别向内层椭圆引切线
,
,且两切线斜率之积等于
,则椭圆的离心率为( )
![](https://img.xkw.com/dksih/QBM/2021/7/8/2759883472543744/2777775092613120/STEM/f9e3c8b8c18241bba9a06f64891dc233.png?resizew=424)
![](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/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a46b82c6c12061a9a20d540b782aa27.png)
![](https://img.xkw.com/dksih/QBM/2021/7/8/2759883472543744/2777775092613120/STEM/f9e3c8b8c18241bba9a06f64891dc233.png?resizew=424)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2021-08-02更新
|
1217次组卷
|
12卷引用:上海市金山区2021-2022学年高二下学期期中数学试题
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7 . 在平面直角坐标系
中,过方程
所确定的曲线C上点
的直线与曲线C相切,则此切线的方程
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/26/04248dd4-2a9e-46bf-8333-9a00aa380547.png?resizew=160)
(1)若
,直线
过
点被曲线C截得的弦长为2,求直线
的方程;
(2)若
,
,点A是曲线C上的任意一点,曲线过点A的切线交直线
于M,交直线
于N,证明:
;
(3)若
,
,过坐标原点斜率
的直线
交C于P、Q两点,且点P位于第一象限,点P在x轴上的投影为E,延长QE交C于点R,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70ed42bf714fe054b653240f40c3d017.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22962a2ad892cb6b14ab039a06e8cdc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10bbbf65a3b546a0c297d23c7a1c4705.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/26/04248dd4-2a9e-46bf-8333-9a00aa380547.png?resizew=160)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c0d612eb54997b8e18e64cf22d67901.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d3f986a4f053c576c8a58c7debc8829.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf0086b054ef120408acac806a1b1318.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a87d9da32b85bc11e8f486ea3ec89216.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/102da243d031c465c687139fc7282a47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4b7e4c300a569ab4a050359fb3ccee4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18352d9b80514fa2915b54701c09b078.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4479d54b1eced7c425e2deaefb18c233.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/935b4035585dfe624ebdd0c758c6ea89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f0d68648b10fce54dfc19c5ee60086d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9fce9427c9b17e4d3cda0c3ff3e2e14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0fd8ac31144079244b1070c84445db2.png)
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