解题方法
1 . 过抛物线
的焦点
的直线
与曲线
交于
,
两点,且
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.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/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/3003587b95523caeb2d8ccaf27fa5a7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88bee8e70f1fab639be1636c7bce0477.png)
A.3 | B.9 | C.![]() | D.![]() |
您最近一年使用:0次
2 . 已知点
是抛物线
:
的准线上的任意一点,过点
作
的两条切线
,
,其中
、
为切点.
(1)证明:直线
过定点,并求出定点坐标;
(2)若直线
交椭圆
:
于
,
两点,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e48f28aeccf369df5980ac787e9e313f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/438f34bc8b04e8c494b91306ac6fe352.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2dca049735b45fb9b2533c68605eddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
(1)证明:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f552e02625ebe3e27ef30aaac7415173.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/26a189b08ef38f4893878c56f8414397.png)
您最近一年使用:0次
2021-05-16更新
|
616次组卷
|
4卷引用:河南省新乡名校2020-2021学年高二下学期期末联考数学(理)试题
名校
解题方法
3 . 如图,已知圆
:
与抛物线
:
相切.
![](https://img.xkw.com/dksih/QBM/2021/1/30/2647331258531840/2650722890162176/STEM/7afb8cb4-0c2a-4ada-96f5-d79d202ef87f.png)
(1)求
的焦点坐标;
(2)若直线
(
)与圆
相切,且与
相交于
,
两点,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15468301c042beef3ef15a2b1bf3ac51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf94c6cc8d79c471b43f3b2b8dcae808.png)
![](https://img.xkw.com/dksih/QBM/2021/1/30/2647331258531840/2650722890162176/STEM/7afb8cb4-0c2a-4ada-96f5-d79d202ef87f.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fac9d41ea9d8ded52c11fad476725068.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e10e1c43b86a8cd4360ca9b57232164.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaff41080fdea43eea7efedf9ebc1498.png)
您最近一年使用:0次
2021-02-04更新
|
392次组卷
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3卷引用:河南省新乡市2020-2021学年高二上学期期末数学文科试题
4 . 已知抛物线
,斜率为1的直线经过抛物线C的焦点,与抛物线C交于A、B两点,且
.
(1)求抛物线C的方程;
(2)若点
在抛物线C上,证明:点P关于直线
的对称点Q也在抛物线C上.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37ab7408ffcefcb8e5e1ad4a9c58f1b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ed9d97b8745ed1c15349ea3fffc299.png)
(1)求抛物线C的方程;
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d42f5bcd4cf5653a0840fc0c0ab8417.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25c6b1d13fc39f936ef90d9281a6ed57.png)
您最近一年使用:0次
2021-01-28更新
|
317次组卷
|
2卷引用:河南省三门峡市2020-2021学年高二上学期期末数学(理科)试题
5 . 已知抛物线
:
的焦点为
,过点
的直线
与抛物线
交于
,
两点.
(1)若
,求弦长
;
(2)若直线
的斜率为2,
为坐标原点,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42102c1c07562853219ca5918803a27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12a3efb79f35db8448f3391252ab7d4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8df332f01628130c084fd46aaca0a4b7.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0442c77fde680799254fb49de52dd84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f4dfec890cdfdda355e19463f3be813.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
您最近一年使用:0次
2021-01-28更新
|
360次组卷
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7卷引用:河南省南阳市2020-2021学年高二上学期期末适应性摸底考试数学(理科)试题
名校
解题方法
6 . 已知直线
与抛物线
交于
两点,则线段
的长是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6db0a1cbf7b0ed76c443b953af8734d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2021-01-17更新
|
303次组卷
|
3卷引用:河南省周口市沈丘县第一高级中学2020-2021学年高二上学期期末数学(文)试题
7 . 如图,在平面直角坐标系
中,抛物线
与圆
的一个交点为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/22/fdaf8e8a-96b8-4eb9-a369-24334dc6fc93.png?resizew=140)
(1)求抛物线
及圆
的方程;
(2)设直线
与圆
相切于点
,与抛物线
交于
两点,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82ea1be9b9b6bb12afa7e1ce703d1603.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/292e036ca7fb29152d1c5b1cd8312bb5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/22/fdaf8e8a-96b8-4eb9-a369-24334dc6fc93.png?resizew=140)
(1)求抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
(2)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9218c83d28dd299016c9c09e5f888e7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95b7fdcd237d89fd82b977ed60655ed2.png)
您最近一年使用:0次
8 . 已知抛物线
的焦点为F,过点F的直线l交抛物线于A,B两点,以线段AB为直径的圆交x轴于M,N两点,设线段AB的中点为Q.若抛物线C上存在一点
到焦点F的距离等于3.则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8516f71467b419293fa27df70bdaed74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/404faaab9a2d8aed675052e189a91464.png)
A.抛物线的方程是![]() | B.抛物线的准线是![]() |
C.![]() ![]() | D.线段AB的最小值是6 |
您最近一年使用:0次
2020-03-10更新
|
1397次组卷
|
15卷引用:河南省焦作市武陟县第一中学2022-2023学年高二下学期期末数学试题
河南省焦作市武陟县第一中学2022-2023学年高二下学期期末数学试题河南省焦作市博爱县第一中学2022-2023学年高二下学期期末数学试题河南省洛阳市第一高级中学2023-2024学年高二上学期期中达标数学测评卷(A卷)河南省南阳市第一中学校2023-2024学年高二上学期期中数学考前模拟试题江苏省镇江中学2020-2021学年高二上学期期初数学试题(已下线)专题13 抛物线-2020-2021学年高中数学新教材人教A版选择性必修配套提升训练(已下线)第7讲 抛物线-2021-2022学年高二数学多选题专项提升(人教A版2019选择性必修第一册)(已下线)专题3-3 圆锥曲线最值问题2023版 湘教版(2019) 选修第一册 过关斩将 第3章 综合拔高练2020届山东省潍坊市高三下学期开学考试数学试题(已下线)强化卷02(3月)-冲刺2020高考数学之拿高分题目强化卷(山东专版)(已下线)强化卷07(3月)-冲刺2020高考数学之少丢分题目强化卷(山东专版)(已下线)备战2020年高考数学之考场再现(山东专版)05(已下线)专题16 平面解析几何(2)-2020年新高考新题型多项选择题专项训练(已下线)第8篇——平面解析几何-新高考山东专题汇编
解题方法
9 . 如图,在平面直角坐标系
中.抛物线
与圆
的一个交点为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57d2b3f2d4a4dc3118347d94545cc6cc.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/8/5d99c989-98ac-4ef9-bf65-98a81121b71d.png?resizew=166)
(1)求抛物线
及圆
的方程;
(2)设直线
与圆
相切于点
,若
,直线
与抛物线
交于
两点,求
面积
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bf92a1ba410263d4f68b7e0432b19aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57d2b3f2d4a4dc3118347d94545cc6cc.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/8/5d99c989-98ac-4ef9-bf65-98a81121b71d.png?resizew=166)
(1)求抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
(2)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7775aa57ca0e62216f3039ed88dceed0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a88585b01bf82d7e42202b0121ead27.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/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b8189f7b0ffe4d20bf0fad43b4ed589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
您最近一年使用:0次
10 . 斜率为
的直线
经过抛物线
的焦点
且与抛物线交于
、
两点,则线段
的长为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d599cb4a589f90b0205f24c2e1fa021e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7089148c36cb3c39af71de653756396a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/092fd1b1d33979818300cd2e3699bff7.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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次
2020-02-26更新
|
1191次组卷
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7卷引用:河南省安阳市滑县2019-2020学年高二上学期期末数学(理)试题
河南省安阳市滑县2019-2020学年高二上学期期末数学(理)试题河南省安阳市滑县2019-2020学年高二上学期期末数学(文)试题辽宁省盘锦市第二高级中学2019-2020学年高二上学期期末考试数学试题安徽省滁州市定远县重点中学2020-2021学年高二上学期期末数学(理)试题内蒙古鄂尔多斯市四旗2020-2021学年高二上学期期末联考理科数学试题(已下线)第06讲 抛物线的简单几何性质-【帮课堂】(已下线)2020年新高考全国2卷数学高考真题变式题11-16题