2020高三·全国·专题练习
解题方法
1 . 如图,直线
与抛物线
相交于A,B两点,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/026808536f6b6d265c778e23836fbf13.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b072ff6d1b83232bebd7d4709ffba4ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3825ccc273ef9a672a606432d165b866.png)
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5卷引用:秒杀题型07 圆锥曲线中的直角弦-2020年高考数学试题调研之秒杀圆锥曲线压轴题
(已下线)秒杀题型07 圆锥曲线中的直角弦-2020年高考数学试题调研之秒杀圆锥曲线压轴题人教A版(2019) 选择性必修第一册 新高考名师导学 第三章 3.3 抛物线(已下线)3.3.2抛物线的几何性质(备作业)-【上好课】2021-2022学年高二数学同步备课系列(苏教版2019选择性必修第一册)(已下线)3.3 抛物线人教A版(2019)选择性必修第一册课本习题 习题 3.3
2020高三·全国·专题练习
解题方法
2 . 已知双曲线
,过点
的直线l与双曲线相交于A,B两点,P能否是线段AB的中点?为什么?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d34cf4ed961f4052ed35c7475c7d32e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/797c488729678e74e0825c2e92b544b4.png)
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6卷引用:专题9.11 解析几何减少运算量的常见运算技巧-2021年高考数学(理)一轮复习-题型全归纳与高效训练突破
(已下线)专题9.11 解析几何减少运算量的常见运算技巧-2021年高考数学(理)一轮复习-题型全归纳与高效训练突破人教A版(2019) 选择性必修第一册 新高考名师导学 第三章 3.2 双曲线(已下线)3.2 双曲线(已下线)第38讲 点差法与定比点差法-2022年新高考数学二轮专题突破精练(已下线)知识点:曲线与方程 易错点2 忽视一元二次方程根的判别式导致错误人教A版(2019)选择性必修第一册课本习题 习题 3.2
名校
解题方法
3 . 已知椭圆
的离心率
,左、右焦点分别为
,
,且
与抛物线
的焦点重合.
(1)求椭圆的标准方程;
(2)若过
的直线交椭圆于
,
两点,过
的直线交椭圆于
,
两点,且
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52a0a43a5b4d5b4bb4e3e936b032a80a.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/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
(1)求椭圆的标准方程;
(2)若过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfc1f76257275ab4b04f9bc913535670.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c761dad84bd29109dc0ffc31b9cbbd46.png)
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5卷引用:天一大联考2017—2018学年高中毕业班阶段性测试(四)理科数学
名校
4 . 如图,抛物线
的焦点为
,斜率
的直线
过焦点
,与抛物线交于
、
两点,若抛物线的准线与
轴交点为
,则
( )
![](https://img.xkw.com/dksih/QBM/2021/1/28/2645989139480576/2652178390810624/STEM/a37b52e2019a49d2b2bb33935f1a29db.png?resizew=133)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7089148c36cb3c39af71de653756396a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5095a28bb1b91bf6bed9e2cfbd76bb18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.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/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05c20c40c29d62950bcebc705337f9a2.png)
![](https://img.xkw.com/dksih/QBM/2021/1/28/2645989139480576/2652178390810624/STEM/a37b52e2019a49d2b2bb33935f1a29db.png?resizew=133)
A.1 | B.![]() | C.![]() | D.![]() |
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2卷引用:山西省长治市沁县中学2020-2021学年高二上学期第二次月考数学(理)试题
解题方法
5 . 已知椭圆
右顶点与右焦点的距离为
,短轴长为
,O为坐标原点.
(1)求椭圆的方程;
(2)求以点
为中点的弦所在直线的方程.
(3)过点
的直线l与椭圆分别交于A,B两点,求
的面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2ab9ade9bfd2479c0a61bf0601b46a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
(1)求椭圆的方程;
(2)求以点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a453aca6de44f9e23703ec8f421fa32.png)
(3)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21348d39ad9cc9b38d3ae99ce38eeccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
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6 . 在平面直角坐标系xOy中,已知点A在椭圆
上,点P满足
,且
,则线段OP在x轴上的投影长度的最大值为_______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b747db7eaf469c6d1607e4b0d028299f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d843c47074c6bb768583ce61fdcb1b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31f836035547b63c21d44d002adace97.png)
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3卷引用:上海市交大附中2018-2019学年高二上学期期末数学试题
上海市交大附中2018-2019学年高二上学期期末数学试题上海市西南位育中学2020-2021学年高二上学期期末数学试题(已下线)高二期末押题01-2020-2021学年高二数学下学期期末专项复习(沪教版)
7 . 在平面直角坐标系
中,已知椭圆
的右顶点为
,离心率为
,
是直线
上任一点,过点
且与
垂直的直线交椭圆于A,
两点.
![](https://img.xkw.com/dksih/QBM/2021/2/5/2651563934146560/2651724927664128/STEM/dcd4067b-c1f1-4f1e-8518-1778d55d3be2.png?resizew=245)
(1)求椭圆的方程;
(2)若
点的坐标为
,求弦
的长度;
(3)设直线
的斜率分别为
,问:是否存在常数
,使得
?若存在,求出
的值;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fab8a0cc6504aa4c3a38006f5394b4c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f23d29646155e27b172ecdf263e2d702.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2a29ba49963134a7232fa8574105fc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://img.xkw.com/dksih/QBM/2021/2/5/2651563934146560/2651724927664128/STEM/dcd4067b-c1f1-4f1e-8518-1778d55d3be2.png?resizew=245)
(1)求椭圆的方程;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/238f0ea276a00ae8d681ce00cc11c8ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(3)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c77f8d0c1396be699ccacac8bcc56724.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dca1726d463bd741c904abd9b6589056.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd743775190d205936f7737a9a219e37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
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名校
8 . 设
为坐标原点,已知抛物线
:
的焦点为
,过点
的直线
交抛物线
于
,
两点.
(1)当直线
经过点
时,求
的值;
(2)过点
作不经过原点的两条直线
,
分别与抛物线
和圆
:
相切于点
,
,求证:
,
,
三点共线.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7089148c36cb3c39af71de653756396a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be92f0e0012a7696c78e3e00513edefd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5c2a2a2160cb0906e5b2c631b1c07dd.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)
(1)当直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43f8f3928d6004e17c7d5f117c9fa393.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5c2a2a2160cb0906e5b2c631b1c07dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b46c607b3deac746c0ef3389ad8f65c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c4c865445dda4a59b6d5cb18fd74404.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/550d183b05000722c74baf25eb4a6741.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
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9 . 如果双曲线
的一条渐近线上的点
关于另一条渐近线的对称点恰为右焦点
为双曲线上的动点,已知
,则
的值可能为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bc6f4354795b44f397c0961cf82cb8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6d538549345e15d10ed6dbe4c491717.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a86b9dc3ef5bf77ddb3b2ba203e482ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81cf4c81b58e68c55d99233f0217a502.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a568b8d07836e773a32dafe77c43c6f0.png)
A.![]() | B.2 | C.![]() | D.4 |
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10 . 设点
和
分别是椭圆
上不同的两点,线段
最长为4.
(1)求椭圆
的标准方程;
(2)若直线
过点
,且
,线段
的中点为
,求直线
的斜率的取值范围.
![](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/f1fe51388687c89cd24c2b4c976c806e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e75ebcf0d951f833ca90e040f3cd4db6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7adb41d5a387efa4baecb73226beeabe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
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3卷引用:山西省2019-2020学年高二下学期期中联考数学(理)试题