1 . 过抛物线
的焦点F作直线与抛物线交于A,B两点,以AB为直径画圆,观察它与抛物线的准线l的关系,你能得到什么结论?相应于椭圆、双曲线如何?你能证明你的结论吗?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3764ba3aa0a241787f4661026bb14053.png)
您最近一年使用:0次
2021-02-06更新
|
1622次组卷
|
4卷引用:人教A版(2019) 选择性必修第一册 新高考名师导学 第三章 复习参考题 3
20-21高一·浙江·期末
2 . 已知抛物线C:
,焦点为
,点
在抛物
上,设
,其中
.
(I)求焦点
的坐标;
(Ⅱ)试判断直线
与抛物线
的位置关系,并加以证明.
![](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/12a3efb79f35db8448f3391252ab7d4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/722679d5195674a8bdad9dc65f76d2e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14b8e0e181de2dfa47561cc534287eed.png)
(I)求焦点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
(Ⅱ)试判断直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
您最近一年使用:0次
2021-01-15更新
|
597次组卷
|
4卷引用:3.3 抛物线(精练)-2021-2022学年高二数学一隅三反系列(人教A版2019选择性必修第一册)
(已下线)3.3 抛物线(精练)-2021-2022学年高二数学一隅三反系列(人教A版2019选择性必修第一册)(已下线)【新东方】双师119第三章(基础过关)圆锥曲线的方程 A卷-【双基双测】2021-2022学年高二数学同步单元AB卷(浙江专用)(人教A版2019选择性必修第一册)(已下线)选择性必修第一册 数学全册检测题 B卷(综合提升)-【双基双测】2021-2022学年高二数学同步单元AB卷(浙江专用)(人教A版2019选择性必修第一册)
名校
解题方法
3 . 已知抛物线
,过点
的直线
交抛物线
于
,
两点.
(1)求抛物线的焦点坐标及准线方程;
(2)证明:以线段
为直径的圆过原点
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fa2c731aaa4005382d5b4324e29fbb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d56ab70e602f2e2e291df643ab209162.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)求抛物线的焦点坐标及准线方程;
(2)证明:以线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
您最近一年使用:0次
2020-11-27更新
|
287次组卷
|
4卷引用:苏教版(2019) 选修第一册 必杀技 第三章 3.3.2抛物线的几何性质
4 . 已知抛物线
,其准线方程为
,直线
过点
且与抛物线交于
、
两点,
为坐标原点.
(1)求抛物线方程;
(2)证明:
的值与直线
倾斜角的大小无关;
(3)若
为抛物线上的动点,记
的最小值为函数
,求
的解析式.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3764ba3aa0a241787f4661026bb14053.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/122fa7155f6858a570e8dee2495822a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f188cc2bd8cae4a9d2593110456e1964.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/1dde8112e8eb968fd042418dd632759e.png)
(1)求抛物线方程;
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ace585d3cc2e113a0927cdf9e56756a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b94a5e8840c1ccaa188076ecfcaa418.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f191ec429432d158ab0513926197928.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f191ec429432d158ab0513926197928.png)
您最近一年使用:0次
2020-12-02更新
|
488次组卷
|
7卷引用:专题2.4 抛物线-2020-2021学年高二数学课时同步练(苏教版选修2-1)
(已下线)专题2.4 抛物线-2020-2021学年高二数学课时同步练(苏教版选修2-1)苏教版(2019) 选修第一册 选填专练 第3章 微专题五 高考中圆锥曲线问题(1):范围、最值问题(已下线)专题2.4 抛物线-2020-2021学年高二数学课时同步练(苏教版选修1-1)上海市格致中学2018-2019学年高三下学期三模数学试题2017年上海市长宁、金山、青浦区高考二模数学试题上海市位育中学2021届高三上学期期中数学试题上海市建平中学2021-2022学年高二下学期3月月考数学试题
5 . 抛物级
的焦点
到直线
的距离为2.
(1)求抛物线的方程;
(2)设直线
交抛物线于
,
两点,分别过
,
两点作抛物线的两条切线,两切线的交点为
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8516f71467b419293fa27df70bdaed74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423f5e7781b94f96ff4aac23cba2964d.png)
(1)求抛物线的方程;
(2)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6767830cc1811f0f4ea5a008fdc7e723.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a09f0f549b84cea2b82e201cf831e7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1769d994ad26f76a8095350aeed6a64c.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)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c80406e8beb743b122bd7b021671c780.png)
您最近一年使用:0次
2020-07-31更新
|
1116次组卷
|
7卷引用:专题2.5 抛物线(B卷提升篇)-2020-2021学年高二数学选择性必修第一册同步单元AB卷(新教材人教B版)
(已下线)专题2.5 抛物线(B卷提升篇)-2020-2021学年高二数学选择性必修第一册同步单元AB卷(新教材人教B版)江苏省扬州大学附属中学东部分校2021-2022学年高二上学期期中数学试题江苏省南通市2020届高三下学期高考考前模拟卷(一)数学试题(已下线)专题37 阿基米德三角形(已下线)重难点突破14 阿基米德三角形 (七大题型)(已下线)题型22 5类圆锥曲线解题技巧(已下线)大招24阿基米德三角形
解题方法
6 . 已知抛物线
恰好经过等腰梯形
的四个顶点,
,
的延长线与抛物线E的准线的交点
.
(1)求抛物线E的方程;
(2)证明:
经过抛物线E的焦点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c2c84933c089ac8dd228def0c2200ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd8e727e4efc22b49649f71ae9c9d84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a6424c41d9d1f85b9152446b91d411d.png)
(1)求抛物线E的方程;
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
您最近一年使用:0次
2020-07-22更新
|
172次组卷
|
4卷引用:苏教版(2019) 选修第一册 必杀技 第三章 第3.3节综合训练
名校
7 . 已知动圆
过点
且和直线
:
相切.
(1)求动点
的轨迹
的方程;
(2)已知点
,若过点
的直线与轨迹
交于
,
两点,求证:直线
,
的斜率之和为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2ba2238d6afe0187534155dd9ac48c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99c6875d552e9fff3c7d655f3a59b166.png)
(1)求动点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22c8c934fb978c8840bed9680408977c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.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/b66a5b7813e902306477f91f9f4084cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e5c62f22d7afc5627fcb86599faa8e1.png)
您最近一年使用:0次
2019-12-19更新
|
658次组卷
|
3卷引用:苏教版(2019) 选修第一册 一蹴而就 第3章 3.3.1 抛物线的标准方程
8 . 如图,设点
,直线
,点
在直线
上移动,
是线段
与
轴的交点,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/7/ac7d24d6-5ad4-4dca-ae4d-868dc65dd5ab.png?resizew=160)
(1)求动点
的轨迹
的方程;
(2)直线
过点
,与轨迹
交于
两点,过点
的直线与直线
交于点
,求证:
轴.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/092fd1b1d33979818300cd2e3699bff7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4180dae966f648d368a10edf3b7e3c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb26d84907c923278ac4626a9d58947.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b7aa3a192ade4294c7bbfe3937984bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5b9d83969b6a8e27e57ab71b34e2b81.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/7/ac7d24d6-5ad4-4dca-ae4d-868dc65dd5ab.png?resizew=160)
(1)求动点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.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/7f4411b37e8ed03b1841906af3bf912f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4180dae966f648d368a10edf3b7e3c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3450bce141a4f3aded5e0feffe78580.png)
您最近一年使用:0次
名校
9 . 已知
是抛物线
:
的焦点,点
在抛物线上,且
.
(1)求抛物线
的标准方程;
(2)若
、
是抛物线
上的两个动点,且
,
为坐标原点,求证:直线
过定点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.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/21320585c32c9b56ed9c6d3af04250b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50e9832ecfde6aa309da44f9a94cb833.png)
(1)求抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若
![](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/3825ccc273ef9a672a606432d165b866.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次
2020-01-03更新
|
586次组卷
|
3卷引用:3.3 抛物线(精练)-2020-2021学年一隅三反系列之高二数学新教材选择性必修第一册(人教A版)
(已下线)3.3 抛物线(精练)-2020-2021学年一隅三反系列之高二数学新教材选择性必修第一册(人教A版)安徽省六安一中、舒城中学、霍邱一中2019-2020学年高二上学期第二次段考数学(文)试题宁夏石嘴山市第三中学2020届高三高考第五次模拟考试数学(文)试题
名校
10 . 已知抛物线
的焦点为
,
轴上方的点
在抛物线上,且
,直线
与抛物线交于
,
两点(点
,
与
不重合),设直线
,
的斜率分别为
,
.
(Ⅰ)求抛物线的方程;
(Ⅱ)当
时,求证:直线
恒过定点并求出该定点的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ed5cf0b4c918b2795034e5b2b53cd1e.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/7e16d691397d33e3c814d43e167384d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f7af88fa4d520e50e7904f04cb30bde.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b66a5b7813e902306477f91f9f4084cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e5c62f22d7afc5627fcb86599faa8e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
(Ⅰ)求抛物线的方程;
(Ⅱ)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d53e4863069524d310699691da364dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
您最近一年使用:0次
2019-05-12更新
|
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