名校
解题方法
1 . 过抛物线
的焦点
且斜率为
的直线交抛物线于A,
两点,
,则
的值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3764ba3aa0a241787f4661026bb14053.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2883283ba8bd3fba4550b7408ce6731b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
您最近一年使用:0次
2022-02-21更新
|
560次组卷
|
3卷引用:内蒙古呼和浩特市职工子弟第一中学2021-2022学年高二上学期期末数学试题
2 . 已知抛物线
,过焦点的直线l交抛物线C于M、N两点,且线段
中点的纵坐标为2.
(1)求直线l的方程;
(2)设x轴上关于y轴对称的两点P、Q,(其中P在Q的右侧),过P的任意一条直线交抛物线C于A、B两点,求证:
始终被x轴平分.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bb4dd4670828f75bc573b52cdd02e1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
(1)求直线l的方程;
(2)设x轴上关于y轴对称的两点P、Q,(其中P在Q的右侧),过P的任意一条直线交抛物线C于A、B两点,求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c7bbe0ac1c88c9d35978a7184ba553.png)
您最近一年使用:0次
2021-10-24更新
|
819次组卷
|
7卷引用:内蒙古自治区阿拉善盟第一中学2021-2022学年高二上学期期末考试数学(理)试题
名校
解题方法
3 . 已知抛物线
的焦点为
,直线
与抛物线交于
两点,
为坐标原点,直线
的斜率之积为
,则
的最小值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ac62b1ade07205ae2693ec1ab135def.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/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5a5e484dfef494d27bc35ae7b8cf75d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13db58018d2e15e4349afa11dfd52d41.png)
A.32 | B.36 | C.42 | D.46 |
您最近一年使用:0次
2023-02-03更新
|
229次组卷
|
2卷引用:内蒙古通辽市重点校2022-2023学年高二上学期期末检测理科数学试题
名校
解题方法
4 . 已知
是抛物线![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa96c86a9085aeb7a57ce955200f0c80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fc58c62444bf42a25289c45425a00f2.png)
的焦点,
是抛物线上一点,且
.
(1)求抛物线
的方程;
(2)直线
与抛物线
交于
,
两点,若
(
为坐标原点),则直线
是否会过某个定点?若是,求出该定点坐标,若不是,说明理由.
![](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/aa96c86a9085aeb7a57ce955200f0c80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fc58c62444bf42a25289c45425a00f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b75ed10db4b9747a4b6d865b774f6b6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04342c55b1cded22d2751b521cb46733.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d09e8a127fffff3b4df40d85780ace8d.png)
(1)求抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)直线
![](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/7ef54adb0b01f212dd43fcea5913ce72.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
您最近一年使用:0次
2020-02-27更新
|
1135次组卷
|
6卷引用:内蒙古开鲁县第一中学2019-2020学年高二下学期期中考试数学(文)试题
名校
5 . 已知点
和抛物线
,过C的焦点且斜率为k的直线与C交于A,B两点.若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd707b69a11f8de5566f23c1a2a9ff5a.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01bdc03239d7c7ca03544d25a6026018.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fa2c731aaa4005382d5b4324e29fbb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15148cae568d8960c62a4d0eddf5b03b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd707b69a11f8de5566f23c1a2a9ff5a.png)
您最近一年使用:0次
2022-01-18更新
|
414次组卷
|
5卷引用:内蒙古包头市2021-2022学年高二上学期期末考试数学(理)试题
名校
解题方法
6 . 已知抛物线顶点在原点,焦点在x轴上,又知此抛物线上一点
到焦点的距离为4.
(1)求此抛物线的方程.
(2)若此抛物线方程与直线
相交于不同的两点A,B,且AB中点横坐标为4,求k的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d93c1305461350915fceaa7deabbaa79.png)
(1)求此抛物线的方程.
(2)若此抛物线方程与直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02ebce8b2a915356ed39f36c5bad2ebe.png)
您最近一年使用:0次
7 . 过抛物线
(
)焦点
,斜率为
(
)的直线交抛物线于
,
两点,若
,则
( )
![](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/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f0d68648b10fce54dfc19c5ee60086d.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/0bdb569825836bfada88137cb20e885e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd707b69a11f8de5566f23c1a2a9ff5a.png)
A.![]() | B.2 | C.![]() | D.1 |
您最近一年使用:0次
名校
解题方法
8 . 已知抛物线
:
,过其焦点且斜率为2的直线
与抛物线
交于
,
两点,若线段
中点的纵坐标为1,则抛物线
的准线方程为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3764ba3aa0a241787f4661026bb14053.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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2021-10-25更新
|
376次组卷
|
4卷引用:内蒙古霍林郭勒市第一中学2021-2022学年高二上学期12月月考数学(文科)试题
内蒙古霍林郭勒市第一中学2021-2022学年高二上学期12月月考数学(文科)试题贵州省贵州师范大学附属中学2021-2022学年高二10月月考数学(理)试题广西玉林市(玉实、玉一、北高、容高、岑中)五校联考2021-2022学年高二上学期期中质量检测数学试题(已下线)考点19 圆锥曲线-2022年高考数学一轮复习小题多维练(新高考版)
名校
9 . 已知抛物线
的焦点到准线的距离为4,直线
与抛物线交于
两点.
(1)求此抛物线的方程;
(2)若以
为直径的圆过原点O,求实数k的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3764ba3aa0a241787f4661026bb14053.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ba96537bd728defbeb2b6f94627e101.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
(1)求此抛物线的方程;
(2)若以
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次
2020-02-27更新
|
427次组卷
|
8卷引用:内蒙古自治区赤峰市赤峰二中2021-2022学年高二上学期期末数学理科试题
名校
10 . 已知抛物线C:
,过定点
的直线为l.
(1)若l与C仅有一个公共点,求直线l的方程;
(2)若l与C交于A、B两点,直线OA、OB的斜率分别为
、
,试探究
与
的数量关系.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1b6f209d1a805437046ca6ef79dd.png)
(1)若l与C仅有一个公共点,求直线l的方程;
(2)若l与C交于A、B两点,直线OA、OB的斜率分别为
![](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/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
您最近一年使用:0次