名校
解题方法
1 . 如图,已知抛物线
与圆
相交于A,B,C,D四点.
![](https://img.xkw.com/dksih/QBM/2022/2/22/2921996648964096/2926331539554304/STEM/870118ca-83c2-4324-9577-c9c10d565188.png?resizew=158)
(1)若
,求抛物线C的方程;
(2)试探究直线AC是否经过定点,若是,求出定点坐标;若不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37ab7408ffcefcb8e5e1ad4a9c58f1b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8070f2e81c6b422d9f6043ce60fdbc0b.png)
![](https://img.xkw.com/dksih/QBM/2022/2/22/2921996648964096/2926331539554304/STEM/870118ca-83c2-4324-9577-c9c10d565188.png?resizew=158)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a130db9ea31563ff72586d39e24b082e.png)
(2)试探究直线AC是否经过定点,若是,求出定点坐标;若不是,请说明理由.
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名校
解题方法
2 . 已知抛物线
的顶点在原点,焦点在
轴上,且抛物线上有一点
到焦点
的距离为6.
(1)求抛物线
的方程;
(2)若不过原点
的直线
与抛物线
交于A、B两点,且
,求证:直线
过定点并求出定点坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e428c439d100abc3ee0099d1f8e353d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
(1)求抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若不过原点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.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/3825ccc273ef9a672a606432d165b866.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
您最近一年使用:0次
2022-02-21更新
|
468次组卷
|
5卷引用:四川省宜宾市叙州区第一中学校2022-2023学年高二下学期开学考试数学(理)试题
四川省宜宾市叙州区第一中学校2022-2023学年高二下学期开学考试数学(理)试题四川省宜宾市叙州区第一中学校2022-2023学年高二下学期开学考试数学(文)试题江西省南昌市湾里一中等六校2021-2022学年高二上学期期末数学(理)试题(已下线)第16讲 直线和圆锥曲线的位置关系(2)(已下线)湖南省郴州市2024届高三一模数学试题变式题17-22
3 . 设A,B是抛物线C:
上两个不同的点,О为坐标原点,若直线OA与OB的斜率之积为-4,则下列结论正确的有( )
①
②![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f586cc62a387323e75a20f65bfc399a.png)
③直线AB过抛物线C的焦点④
面积的最小值是2
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc847b94ecaaa156770fdf3a24ca5d5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f586cc62a387323e75a20f65bfc399a.png)
③直线AB过抛物线C的焦点④
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
A.①③④ | B.①②④ | C.②③④ | D.①②③④ |
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2022-02-10更新
|
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3卷引用:四川省成都市石室中学2023届高三下学期三诊模拟考试文科数学试题
4 . 已知抛物线
的焦点为
,斜率为
的直线与抛物线
交于
、
两点,与
轴交于![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fe4b59c2f40deafebe46420af82cf03.png)
(1)当
,
时.求
的值;
(2)当点
、
重合时,过点
的圆
与抛物线
交于另外一点
.试问直线
是否过
轴上的定点
?若是,请求出点
坐标;若不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bb4dd4670828f75bc573b52cdd02e1d.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/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/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fe4b59c2f40deafebe46420af82cf03.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5095a28bb1b91bf6bed9e2cfbd76bb18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65397f11ea8af736f38debadf420c4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/835df8452abb6184e5da01423c3cb8ed.png)
(2)当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.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/1410414ebd007a6aebfb75240e2b458f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
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解题方法
5 . 设抛物线
上位于第一象限的点M与焦点F的距离为
,点M到x轴的距离为2p,直线l与抛物线相交于A,B两点,且
.
(1)求抛物线的方程和点M的坐标;
(2)求证:直线l恒过定点
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7089148c36cb3c39af71de653756396a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/533a7b702ada1dd80123e4041271d521.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ada25f76504c3fd1226da43c94cb4277.png)
(1)求抛物线的方程和点M的坐标;
(2)求证:直线l恒过定点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20660e49954f09601cbf528a7f436fca.png)
您最近一年使用:0次
解题方法
6 . 设抛物线
位于第一象限的点M与焦点F的距离为
,点M到x轴的距离为2p,直线l与抛物线相交于A,B两点,且
.
(1)求抛物线的方程和点M的坐标;
(2)探究直线l是否恒过定点,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7089148c36cb3c39af71de653756396a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/533a7b702ada1dd80123e4041271d521.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ada25f76504c3fd1226da43c94cb4277.png)
(1)求抛物线的方程和点M的坐标;
(2)探究直线l是否恒过定点,并说明理由.
您最近一年使用:0次
7 . 已知点
在抛物线E:
上.有下列三个条件:
①点P到抛物线E的焦点F的距离为4;
②点
,记E上动点B到直线
的距离为d,且
的最小值为
;
③点P到
的距离比点P到y轴距离大2.
请选择其中一个条件解答下列问题:
(1)求p与t的值;
(2)直线l与抛物线E交于M,N两点,记直线PM的斜率为
,直线PN的斜率为
,当
时,直线l是否过定点?若是,求出定点坐标;若不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b661b498c2f3f885c3587abb1d42f789.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7089148c36cb3c39af71de653756396a.png)
①点P到抛物线E的焦点F的距离为4;
②点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf7d9eb9a891a713b7893af452302d03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b64b91d079810d968b9ef63e3284c7af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32277ebb1433f36f0e696965805b614d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2d52429c8324350309f77e7209a5c35.png)
③点P到
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4356a596535d4e905ae47e191940f34f.png)
请选择其中一个条件解答下列问题:
(1)求p与t的值;
(2)直线l与抛物线E交于M,N两点,记直线PM的斜率为
![](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/c2b1bd378406bcd8156a56469f9300f6.png)
您最近一年使用:0次
解题方法
8 . 已知:抛物线C的顶点在坐标原点,焦点F在x轴上,已知抛物线C上一点
到焦点F的距离为3.
(1)求抛物线C的方程.
(2)设
,动直线L:
与抛物线C相交于B,E两点,记直线DE和直线DB的斜率分别为
,
,证明:
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4569dd44eeb1f2ee56c930e609b6b69.png)
(1)求抛物线C的方程.
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad41d4cfe732c1f2a903c4091c784dfb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/018d29fbd23afb4c465c9c5c8fd42eca.png)
![](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/b69e3f7ddd51215d00661c09cd900d60.png)
您最近一年使用:0次
2022-01-16更新
|
460次组卷
|
3卷引用:四川省雅安市2021-2022学年高二上学期期末检测数学(文)试题
四川省雅安市2021-2022学年高二上学期期末检测数学(文)试题四川省雅安市2021-2022学年高二上学期期末检测数学(理)试题(已下线)专题3-6 抛物线综合大题归类(讲+练)-【巅峰课堂】2023-2024学年高二数学热点题型归纳与培优练(人教A版2019选择性必修第一册)
名校
解题方法
9 . 在平面直角坐标系
中,设点
,直线
,点P在直线l上移动,R是线段PF与y轴的交点,也是PF的中点.
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/28/bcc89068-ef34-4687-822a-77de0bbff145.png?resizew=191)
(1)求动点Q的轨迹的方程E;
(2)过点F作两条互相垂直的曲线E的弦AB、CD,设AB、CD的中点分别为M,N.求直线MN过定点R的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50f7ed2f79cab7160822f9431ddee3c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4180dae966f648d368a10edf3b7e3c3.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/2022/12/28/bcc89068-ef34-4687-822a-77de0bbff145.png?resizew=191)
(1)求动点Q的轨迹的方程E;
(2)过点F作两条互相垂直的曲线E的弦AB、CD,设AB、CD的中点分别为M,N.求直线MN过定点R的坐标.
您最近一年使用:0次
2022-01-16更新
|
593次组卷
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4卷引用:四川省成都市第七中学2021-2022学年高二上学期12月阶段性测试数学(理)试题
解题方法
10 . 已知抛物线
经过点
.
(1)求抛物线
的方程;
(2)若直线
与抛物线
相交于
两点,且
,证明:直线
过定点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b527ec9f92467b8f24554a2a67ee987.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26454b354884f8b9d63910d5dc72e1cc.png)
(1)求抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c09384d6cb95d30f8699459bd4dee84b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49405ccf732496081d661c84c452e611.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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2022-01-04更新
|
1743次组卷
|
4卷引用:四川省成都市蓉城高中教育联盟2021-2022学年高二上学期期末联考数学理科试题