1 . 已知抛物线
,过焦点
的直线交抛物线于
两点,分别过
作准线
的垂线,垂足为
,
为坐标原点,
,则( )
![](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/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8454989732716850cb57ca15f8ef596.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/173ffa0c1821a4817d499a541644815c.png)
A.![]() |
B.若![]() ![]() ![]() |
C.若![]() ![]() ![]() ![]() |
D.若![]() ![]() ![]() ![]() |
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2 . 已知抛物线的焦点为F,过焦点F的直线l交抛物线于A,B两点(其中点A在x轴上方),则( )
A.![]() |
B.弦AB的长度最小值为l |
C.以AF为直径的圆与y轴相切 |
D.以AB为直径的圆与抛物线的准线相切 |
您最近一年使用:0次
解题方法
3 . 已知抛物线
的焦点为
,
,
为
上两个相异的动点,分别在点
,
处作抛物线
的切线
,
,
与
交于点
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/685e48557e8850415a3e38fdab278dac.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/7f9e8449aad35c5d840a3395ea86df6d.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd8f64ebec4a71a609204458cc54df82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eea5c8fe935beac660eda538e59cd43f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd8f64ebec4a71a609204458cc54df82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eea5c8fe935beac660eda538e59cd43f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
A.若直线![]() ![]() ![]() ![]() |
B.若点![]() ![]() ![]() ![]() |
C.若直线![]() ![]() ![]() ![]() |
D.若![]() ![]() ![]() |
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4 . 已知抛物线
的焦点为
,准线交
轴于点
,过点
作倾斜角为
(
为锐角)的直线交抛物线于
两点(其中点A在第一象限).如图,把平面
沿
轴折起,使平面
平面
,则以下选项正确的为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/159a2d4945049c5a8f525f18763eba91.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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fa3254460ecbacecb3e57c5dce227f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d62d30d732c3c6ee3f0dd66d7059356.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ae8768996ca9a0f2c5d9a19abbd54df.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/19/7bb41d16-8518-4b8f-88a5-7c3e6d1cee67.png?resizew=362)
A.折叠前![]() ![]() |
B.折叠前![]() ![]() |
C.折叠后三棱锥![]() ![]() |
D.折叠后异面直线![]() ![]() |
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2023-06-14更新
|
1526次组卷
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6卷引用:重庆市第一中学校2023-2024学年高二上学期11月月考数学试题
重庆市第一中学校2023-2024学年高二上学期11月月考数学试题浙江省乐清市知临中学2023届高三下学期5月第二次仿真考数学试题浙江省金华十校2023-2024学年高三上学期11月模拟考试预演数学试题2023年山西省运城市景胜中学业水平考试数学试题专题08B圆的方程与圆锥曲线(已下线)第三章 折叠、旋转与展开 专题一 平面图形的翻折、旋转 微点7 圆锥曲线中的翻折问题(二)
5 . 已知抛物线
的焦点为
,准线为
,
、
是
上异于点
的两点(
为坐标原点)则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/531fc91e66179b770d8a89e2e7ac8cda.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/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/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
A.若![]() ![]() ![]() ![]() ![]() |
B.若![]() ![]() ![]() |
C.若![]() ![]() ![]() |
D.若![]() ![]() ![]() ![]() ![]() ![]() ![]() |
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2023-04-25更新
|
1284次组卷
|
4卷引用:江苏省南通市海安高级中学2023-2024学年高二上学期期中数学试题
6 . 已知抛物线
的焦点为F,过抛物线上任意一点P作圆
的切线
,A为切点,且直线
交抛物线于另一点Q,则下列结论正确的有( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/26/3eb91c44-acf4-4b00-ba15-1f5d4646e9bf.png?resizew=195)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e8953ded144195804384dcb494d5e2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f11583d5a9d06b238a94e3f24c8aa41b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/26/3eb91c44-acf4-4b00-ba15-1f5d4646e9bf.png?resizew=195)
A.![]() ![]() |
B.![]() ![]() |
C.三角形![]() ![]() |
D.连接![]() ![]() ![]() ![]() ![]() ![]() ![]() |
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2023-04-23更新
|
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3卷引用:山东省菏泽市2022-2023学年高二下学期2月教学质量检测数学试题
山东省菏泽市2022-2023学年高二下学期2月教学质量检测数学试题安徽省合肥市第一中学2023-2024学年高二上学期1月考数学考试试题(已下线)微点5 塞瓦定理、富瑞基尔定理、笛沙格定理、彭塞列闭合定理综合训练
名校
解题方法
7 . 三支不同的曲线
交抛物线
于点
,
为抛物线的焦点,记
的面积为
,下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c042b615c2efdb8e88e33f0b03e59b68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b4cdf33ab57e5c1de20bd4707df69dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a4eaa5f726407d4dc0d38150b56545.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e9bb415ebf91617fe843b83d0a140ea.png)
A.![]() | B.![]() |
C.若![]() ![]() | D.若![]() ![]() |
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2023-04-13更新
|
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3卷引用:浙江省台州市第一中学2023-2024学年高二上学期期中数学试题
名校
解题方法
8 . 设
为抛物线
:
的焦点,过点
的直线
与抛物线
交于
两点,过
作与
轴平行的直线,和过点
且与
垂直的直线交于点
,
与
轴交于点
,则( )
![](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/3764ba3aa0a241787f4661026bb14053.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/af62ce61a664f18555093958ae927f44.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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50b3ae183997b707d16eb4e7f6712fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
A.![]() |
B.当直线![]() ![]() ![]() ![]() ![]() ![]() |
C.若![]() ![]() ![]() ![]() ![]() |
D.点![]() ![]() ![]() |
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2023-04-09更新
|
1435次组卷
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3卷引用:江苏省无锡市第一中学2023-2024学年高二上学期12月质量检测数学试卷
江苏省无锡市第一中学2023-2024学年高二上学期12月质量检测数学试卷浙江省杭州地区(含周边重点中学)2023届高三一模数学试题(已下线)第五篇 向量与几何 专题11 圆锥曲线中的蝴蝶定理 微点3 圆锥曲线中的蝴蝶定理综合训练
名校
解题方法
9 . 已知抛物线
的焦点为
,过点
的直线交
于两点
,点
在准线
上的射影为
,则( )
![](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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d7d5b7a335fb30a034976287aee9e05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
A.若![]() ![]() |
B.若点![]() ![]() ![]() |
C.![]() |
D.若直线过点![]() ![]() |
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2023-03-04更新
|
811次组卷
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4卷引用:山东省临沂市2022-2023学年高二下学期期末数学试题
解题方法
10 . 设抛物线
的焦点为
,
为抛物线上异于顶点的一点,且
在准线上的射影为
,则下列结论正确的有( )
![](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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
A.点![]() ![]() |
B.![]() |
C.当![]() ![]() |
D.当![]() ![]() |
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