解答题-问答题
|
适中(0.65)
|
1 . 把半个椭圆与圆的一段圆弧拼凑于一起,我们把这种曲线称之为“扁圆”.现有半椭圆
与圆弧
组成扁圆,其中
为
的右焦点,
分别为“扁圆”与
轴的左右交点,
分别为“扁圆”与
轴的上下交点,已知
,过
的直线与“扁圆”交于
两点.
(1)求出
与
的方程;
(2)当
时,求
;
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8415e7b3743089333530b9ba06d93898.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f10107f69fa911b6e3f5e6c1dc74c77e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00442d96d695db2c58bf1fb7165fca94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04d468be20b4d43f5de75416de20e8ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4f1e6a41c6dc980852d9c468c65805b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
(1)求出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09e69f34f85c47099375b647b5f2e430.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30654ba32a8ac50a05dc7e34bba72dcc.png)
您最近一年使用:0次
2023-12-16更新
|
502次组卷
|
5卷引用:上海市普陀区长征中学2024届高三上学期10月月考数学试题
上海市普陀区长征中学2024届高三上学期10月月考数学试题上海市嘉定区2024届高三上学期质量调研数学试题广东番禺中学2023-2024学年高三第六次段考数学试题(已下线)第2章 圆锥曲线(知识归纳+题型突破)-2023-2024学年高二数学单元速记·巧练(沪教版2020选择性必修第一册)广东省广州市番禺中学2024届高三第六次段考数学试题
名校
解题方法
2 . 若椭圆
的两个顶点和焦点都在圆
:
上,如图所示,则下列结论正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/14/b8f66116-17b0-42db-a8fa-305ed22ca497.png?resizew=201)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5f5d967ad135991b6075ee45df55643.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/14/b8f66116-17b0-42db-a8fa-305ed22ca497.png?resizew=201)
A.椭圆![]() ![]() |
B.过椭圆![]() ![]() |
C.圆![]() ![]() ![]() |
D.直线![]() ![]() ![]() |
您最近一年使用:0次
2023-12-14更新
|
371次组卷
|
2卷引用:上海市普陀区2024届高考一模数学试题
名校
解题方法
3 . 设椭圆
的上顶点
,左焦点
,右焦点
,左、右顶点分别为
、
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/5/f3619e79-fe85-4a50-848f-c632495d092d.png?resizew=203)
(1)求椭圆方程;
(2)已知点
是椭圆上一动点(不与顶点重合),直线
交y轴于点Q,若
的面积是
面积的
倍,求直线
的方程;
(3)如图过椭圆的上顶点K作动圆
的切线分别交椭圆于M、N两点,是否存在圆
使得
为直角三角形?若存在,求出圆
的半径
;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93e79e069b999b201f3f1111a12e10bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/813f9a2814013e2407b5b1c216159359.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16fd15503ee692f8286b0312f7c6f0cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/5/f3619e79-fe85-4a50-848f-c632495d092d.png?resizew=203)
(1)求椭圆方程;
(2)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edc48974114e23f5a801843710c7ae21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8ef68c72248af27e3b83b4ee5fdeb51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7128a302aa5ac137ce48ebdf2c1dc87f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b70adf939553ab05101455d24afbabdc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edc48974114e23f5a801843710c7ae21.png)
(3)如图过椭圆的上顶点K作动圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94e8acea56a9f17e6ef9bbce1633497f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
您最近一年使用:0次
2023-11-13更新
|
366次组卷
|
2卷引用:上海市晋元高级中学2024届高三上学期期中数学试题
名校
解题方法
4 . 已知双曲线
,点
为双曲线上的动点.
(1)求以
为焦点且经过点
的椭圆的标准方程;
(2)若直线
经过点
且与双曲线恰好有一个公共点,求直线
的方程;
(3)点
在什么位置时,
取得最大?求出最大值及点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5bef93a53a2004910a8cac32f93c4b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dc3e6cfcdc5f03791a23829c031266c.png)
(1)求以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(2)若直线
![](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/0f85fca60a11e1af2bf50138d0e3fe62.png)
(3)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2f9c3b578fc0598d5ec6c79404c6cc2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
您最近一年使用:0次
2023-06-04更新
|
466次组卷
|
2卷引用:上海市宜川中学2023届高三5月模拟数学试题
名校
5 . “
”是“方程
表示焦点在y轴上的椭圆”的________ 条件.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66eba129d92ede31b728e2590c4db2a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2085af2326d0e13a12d3db8dbb79f51.png)
您最近一年使用:0次
2023-06-01更新
|
250次组卷
|
2卷引用:上海市曹杨第二中学2024届高三上学期开学考试数学试题
名校
6 . 方程
表示焦点在
轴上的椭圆,则实数
的范围是_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a0a3b318f445c8b25b0473c6598ee83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
2023-05-30更新
|
967次组卷
|
4卷引用:上海市曹杨第二中学2023届高三5月模拟2数学试题
7 . 已知
为坐标原点,
,
.若点
满足
.记点
的轨迹为曲线
,且
与曲线
在第一象限的交点为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e72358a12f923519a407a46c07f5d33.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5544274135a5332a1403741c8c0bd2dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/788a45292b81b3632fda1f9df89308fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cad245ab26aecb331b737acaad7dbf8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0059cb1f331ba2fdfa8b089d4557401.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e72358a12f923519a407a46c07f5d33.png)
您最近一年使用:0次
8 . 已知椭圆
经过点
和
,则椭圆
的离心率为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57f436117499e8ba9cb034e2704fc0dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efca7f1ccd15925cbebb35dd734981a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
您最近一年使用:0次
2023-04-13更新
|
1691次组卷
|
5卷引用:上海市普陀区桃浦中学2022-2023学年高二下学期期末数学试题
上海市普陀区桃浦中学2022-2023学年高二下学期期末数学试题浙江省台州市2023届高三下学期4月第二次教学质量评估(二模)数学试题(已下线)专题07 平面解析几何(已下线)押新高考第15题 直线与圆及圆锥曲线(已下线)题型23 6类圆锥曲线离心率问题解题技巧
9 . 在xOy平面上.设椭圆
:
,梯形
的四个顶点均在
上,且
.设直线
的方程为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8adc94a18e36df1623c7289a8374321f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/14/3c1aef3b-3b5e-456a-8ff5-18794b1846f2.png?resizew=513)
(1)若
为
的长轴,梯形
的高为
,且
在
上的射影为
的焦点,求
的值;
(2)设
,直线
经过点
,求
的取值范围;
(3)设
,
,
与
的延长线相交于点
,当
变化时,
的面积是否为定值?若是,求出该定值;若不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aeb232030ea004ea15fa2eae6ca29411.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f79863ffcfa63117ca6741b20a48e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8adc94a18e36df1623c7289a8374321f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/14/3c1aef3b-3b5e-456a-8ff5-18794b1846f2.png?resizew=513)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/429671166ab81044097fc277f179ee96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5c10f14aae6fb21e047ecb39cdf40c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c7906b66906ec5943b3bbd9ce9a47e7.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/429671166ab81044097fc277f179ee96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29bf554d005d0858f819d383d7e7802f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a11cb104b04c4e6a1be700e81da279a.png)
您最近一年使用:0次
名校
解题方法
10 . 已知椭圆
的离心率为
,
是椭圆
上的点,长轴的左、右端点为A、B,点P为椭圆
上异于A、B的任意一点.
(1)求椭圆
的方程;
(2)设直线AP、BP的斜率分别为
,证明:
为定值;
(3)过点P作
的切线与圆
交于D、E两点,设OD、OE的斜率分别为
,问
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/fd486b8796b3454eab219c28ed131683.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/399b3c1136d1f0e717e95b69c4c2bc63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
(2)设直线AP、BP的斜率分别为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90963760acac7bfad3ae03088c6c80b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b881044b5c73db6fcce110525741b02.png)
(3)过点P作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8ed863ee96007a76bb201f2781c2769.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e2d18088eecb661fd38b53f6fd0b09a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ee950caafdafed20520afb0ce328d1.png)
您最近一年使用:0次