名校
解题方法
1 . 已知图1中,
、
、
、
是正方形
各边的中点,分别沿着
、
、
、
把
、
、
、
向上折起,使得每个三角形所在的平面都与平面
垂直,再顺次连接
,得到一个如图2所示的多面体,则( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/5/0cc3e25f-ad25-463c-a758-40951b83088a.png?resizew=350)
![](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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611f100dcfa7803db6eb233e2e7f2dab.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/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d822262ff00915910e5b87d81ad1ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/004104bafb5f30338123d4ea2b7fedde.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bc1b68f13fed987f5209197de7bc8b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c768dedaea22607617398ce28a02dd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63b43490ca09467a4c8cd8cfe91c94e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611f100dcfa7803db6eb233e2e7f2dab.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/5/0cc3e25f-ad25-463c-a758-40951b83088a.png?resizew=350)
A.![]() |
B.平面![]() ![]() |
C.直线![]() ![]() ![]() |
D.当![]() ![]() ![]() |
您最近一年使用:0次
2021-01-30更新
|
1857次组卷
|
10卷引用:福建省泉州市高中数学2020-2021学年度高二上学期教学质量监测数学试题
福建省泉州市高中数学2020-2021学年度高二上学期教学质量监测数学试题福建省晋江市第一中学2021-2022学年高二上学期期中考试数学试题(已下线)专题06 空间向量与立体几何(难点)-2020-2021学年高二数学下学期期末专项复习(北师大版2019选择性必修第一册、第二册)湖北省2020-2021学年高二下学期3月联考数学试题(已下线)卷03 空间向量与立体几何-单元检测(难)-2021-2022学年高二数学单元卷模拟(易中难)(2019人教A版选择性必修第一册+第二册)苏教版(2019) 选修第二册 名师精选 高考水平模拟性测试卷江苏省南京师范大学附属中学2021-2022学年高二下学期期中数学试题(已下线)第23节 空间几何体的表面积与体积(已下线)期中测试卷(能力篇)(范围:第一章+第二章椭圆)-2022-2023学年高二数学上学期同步知识梳理+考点精讲精练(人教B版2019选择性必修第一册)(已下线)高二上学期期中【压轴60题考点专练】(选修一全部内容)-2022-2023学年高二数学考试满分全攻略(人教A版2019选修第一册)
解题方法
2 . 已知椭圆
的左、右焦点分别为
、
,离心率为
,M是椭圆上的动点,
的最大面积为1.
(1)求椭圆
的方程;
(2)求证:过椭圆
上的一点
的切线方程为:
;
(3)设点P是直线
上的一个动点,过P作椭圆
的两条切线,切点分别为A,B,则直线AB是否过定点?若是,求出这个定点坐标,否则,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0bfa5840675e634a9f5e1f602775e76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b42fc33bcfc63ec2f4940ccd3f862400.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
(2)求证:过椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0bfa5840675e634a9f5e1f602775e76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00be25c38b5f65f20babdf43572b5d69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4b2724de4e50b21a19c1e02ec3abb48.png)
(3)设点P是直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdbd8a5d973b7a54b7605388fdcfbb07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
您最近一年使用:0次
3 . 已知椭圆
:
(
)经过点
,
,
为
的左、右顶点,且直线
,
的斜率之积为
.
(1)求
的方程;
(2)直线
:
与
交于
,
两点,当
为何值,
恒为定值,并求此时
面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
![](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/7a5f1b6f209d1a805437046ca6ef79dd.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/4b454cdb97c408300b50d945f002c2cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/800c5e266b4ad8462a46970f0a232d52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f46b053f98b1d05a2043e94eeaefea87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/602baac86c2b1668ecdfadc8a5948885.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
(2)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15b256345d7109e081b7c895591e995d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.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/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17a0d9a2f14f7e789892487d6585804a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
您最近一年使用:0次
4 . 过抛物线
:
(
)的焦点
且垂直于
轴的直线交
于
,
两点,过
上一点
(异于原点
)作
轴于点
,下列结论一定正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fc58c62444bf42a25289c45425a00f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5abd313d4e92a762fb7fb0c1cb65263d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.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/4b454cdb97c408300b50d945f002c2cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5d3a0273d1f3046dfad2086d0df56c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
A.![]() |
B.![]() ![]() ![]() |
C.![]() ![]() ![]() |
D.以![]() ![]() |
您最近一年使用:0次
解题方法
5 . 已知
,
为双曲线
:
(
,
)的左、右焦点,以
为圆心,
为半径的圆与
在第一象限的交点为
,直线
与
交于另一点
.若
的面积为
,则
的离心率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19f3fa0b40fb0d9b8c62e37316ab3b04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca5fd57c2c2fcc3c7a574fdd1467d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/878e89b6eca35e34c863e832a2c661db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e86dbcf83cd5d3421b3eed7be7dab32d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3c07ebcbfacda073208d483c58e8a84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c4de44ad9de7eb8f7c43c8e4e4f4fbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
A.2 | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2021-01-23更新
|
1241次组卷
|
4卷引用:福建省厦门市2020-2021学年高二上学期期末考试数学试题
福建省厦门市2020-2021学年高二上学期期末考试数学试题(已下线)专题04 圆锥曲线(难点)-2020-2021学年高二数学下学期期末专项复习(北师大版2019选择性必修第一册、第二册)(已下线)3.2 双曲线(难点)(课堂培优)-2021-2022学年高二数学课后培优练(苏教版2019选择性必修第一册)福建省2022-2023学年高二下学期质优生“筑梦”联考数学试题
名校
解题方法
6 . 在平面直角坐标系中,
,
,设直线
、
的斜率分别为
、
且
,
(1)求点
的轨迹
的方程;
(2)过
作直线
交轨迹
于
、
两点,若
的面积是
面积的
倍,求直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/913f78382630e50543e5f7192cae3ed3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c850811ba59a05e945a665196539a048.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.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/151e09f3a383d7811c619eef3a6398cf.png)
(1)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2f7aca3a25e6ee2d8fa7544716ca683.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.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/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a11cb104b04c4e6a1be700e81da279a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/307d80faaf253cedb782efd4c14072c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
您最近一年使用:0次
2020-12-30更新
|
370次组卷
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8卷引用:福建省莆田第二中学2020—2021学年高二5月月考数学试题
福建省莆田第二中学2020—2021学年高二5月月考数学试题(已下线)黄金卷13-【赢在高考·黄金20卷】备战2021年高考数学全真模拟卷(山东高考专用)【市级联考】河北省石家庄市2019届高三毕业班模拟考试(二)数学(文)试题2020届湖南省长沙市雅礼中学高三上学期第2次月考数学(理)试题河北省武邑中学2019届高三下学期第四次模拟数学(文)试题(已下线)专题05 解析几何中的与三角形面积相关的问题(第五篇)-备战2020年高考数学大题精做之解答题题型全覆盖江苏省南通市海安高级中学2020-2021学年高二上学期第二次阶段检测数学试题上海市奉贤中学2021届高三上学期10月月考数学试题
7 . 在①
平面
,②平面
平面
,③
这三个条件中任选一个,补充在下面的问题中,并解决该问题.
问题:如图,在三棱锥
中,平面
平面
,
是以
为斜边的等腰直角三角形,
,
,
为
中点,
为
内的动点(含边界).
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/30/4d4dbf45-e3cd-4bdd-9c4e-615ba50551b3.png?resizew=135)
(1)求点
到平面
的距离;
(2)若__________,求直线
与平面
所成角的正弦值的取值范围.
注:若选择多个条件分别解答,按第一个解答计分.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a0a858194b17ae1e609ed341d75194.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4aa9084b8fe0fe05c4388d1f835587b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df3ac52a68918388a9148cad6f47454d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4df7e34df42220e8ebb5463b1d0bae89.png)
问题:如图,在三棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d077f6da8b2c00b152d4679aa2ed7f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82b74e2b6dae540571fdd509c4e966b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/747b3c0eb656c2a9f69c93fbd77d4db4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/30/4d4dbf45-e3cd-4bdd-9c4e-615ba50551b3.png?resizew=135)
(1)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
(2)若__________,求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35d58f9019097bd05037aefd5c322916.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
注:若选择多个条件分别解答,按第一个解答计分.
您最近一年使用:0次
2020-12-15更新
|
969次组卷
|
3卷引用:福建省福州第一中学2021-2022学年高二上学期期中考试数学试题
名校
8 . (多选)已知
是椭圆
(
)和双曲线
(
)的公共焦点,
是他们的一个公共点,且
,则以下结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e64fbb01ca05af7aec2ff98b4d4fabb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77e0ddeac5d77078e2453f9402b40553.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/894ee014d39c8d3f1d934e4d3dbba46e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/250bd38b5bb4c9c06011ce6fd9f0729e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db634c178cd7bffbd4cb886e3f2cca22.png)
A.![]() | B.![]() |
C.![]() | D.![]() ![]() |
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2020-12-06更新
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2686次组卷
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8卷引用:福建省上杭一中2020-2021学年高二上学期数学期末模拟卷试题
名校
解题方法
9 . 如图所示,已知圆
上有一动点
,点
的坐标为
,四边形
为平行四边形,线段
的垂直平分线交
于点
,设点
的轨迹为曲线
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/26/2eeb5e37-b78c-4181-9d37-92203bde2429.png?resizew=231)
(1)求曲线
的方程;
(2)过点
的直线
与曲线
有两个不同的交点
、
,问是否存在实数
,使得
成立,若存在求出
的值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38f907ad18841ebbeecc9ead925cb2ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7a999c36de5c9a9ce876a4a56fa34c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ee24ad7be963800890247d63223a9e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74a9b60d91764cd0749db3a4907f41f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/272a717f9ef0a1a33504f9864722d771.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/26/2eeb5e37-b78c-4181-9d37-92203bde2429.png?resizew=231)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19c34d16c9164d3ecc43931ee6956afa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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2020-11-16更新
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3卷引用:福建省上杭一中2020-2021学年高二上学期数学期末模拟卷试题
10 . 在平面直角坐标系xOy中,有三条曲线:①
;②
;③
.请从中选择合适的一条作为曲线C,使得曲线C满足:点F(1,0)为曲线C的焦点,直线y=x-1被曲线C截得的弦长为8.
(1)请求出曲线C的方程;
(2)设A,B为曲线C上两个异于原点的不同动点,且OA与OB的斜率之和为1,过点F作直线AB的垂线,垂足为H,问是否存在定点M,使得线段MH的长度为定值?若存在,请求出点M的坐标和线段MH的长度;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdfa33e88ce1f16bfadb8a52bdcd01e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb6bfee247b367e3fe699e2a8570fdd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3764ba3aa0a241787f4661026bb14053.png)
(1)请求出曲线C的方程;
(2)设A,B为曲线C上两个异于原点的不同动点,且OA与OB的斜率之和为1,过点F作直线AB的垂线,垂足为H,问是否存在定点M,使得线段MH的长度为定值?若存在,请求出点M的坐标和线段MH的长度;若不存在,请说明理由.
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2020-11-15更新
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5卷引用:福建省漳州第一中学2020-2021学年高二下学期期末考试数学试提