名校
解题方法
1 . 如图,已知抛物线
:
,焦点为
,直线
:
交抛物线于
,
两点,延长
,
分别交抛物线于
,
两点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/17/7fa9a8fc-d8dd-42b2-b104-746322a73f1d.png?resizew=173)
(1)求证:直线
过定点;
(2)设
,
,
,
,求
的最小值.
![](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/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/023ab3a7eb0f59993c7608576e47c0f0.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/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/17/7fa9a8fc-d8dd-42b2-b104-746322a73f1d.png?resizew=173)
(1)求证:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/070a6ef168fdf8e483ec7bbb08ee92b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e67a210da374fc4a6485b36f91dcfdaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d138f9ad2979ea517d5ca6e2bb2025e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e28fe27bd145e87edc6609f3890e7ca3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bd354f84c3abd7a2901e98814bb8d38.png)
您最近一年使用:0次
2022-05-08更新
|
1635次组卷
|
3卷引用:江苏省扬州市2022届高三下学期高考前调研数学试题(B卷)
江苏省扬州市2022届高三下学期高考前调研数学试题(B卷)浙江省宁波市效实中学等五校2022届高三下学期5月联考数学试题(已下线)2024年1月普通高等学校招生全国统一考试适应性测试(九省联考)数学试题变式题16-19
名校
解题方法
2 . 双曲线
:
经过点
,且渐近线方程为
.
(1)求
的值;
(2)若抛物线
与C的右支交于点
,证明:直线
过定点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21be96afe9de50c8cef9ae1e0a9a8680.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd0471cd3dccabaef113cd5761544d7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d3051f43ac48c0a730a791b8a93ad37.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
(2)若抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8516f71467b419293fa27df70bdaed74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次
名校
解题方法
3 . 已知过点
的直线与抛物线C:
交于不同的两点M,N,过点M的直线交C于另一点Q,直线MQ斜率存在且过点
,抛物线C的焦点为F,
的面积为1.
(1)求抛物线C的方程;
(2)求证:直线QN过定点
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0929421a6188c3122442866b0b85a5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7089148c36cb3c39af71de653756396a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d87859748d7c7d665df7d430856bae01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/004104bafb5f30338123d4ea2b7fedde.png)
(1)求抛物线C的方程;
(2)求证:直线QN过定点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faf03e87dd5d82d30fd01be26cee1f27.png)
您最近一年使用:0次
2022-02-23更新
|
545次组卷
|
3卷引用:江苏省盐城市滨海中学2022届高三下学期三模数学试题