1 . 直线
过抛物线
:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fc58c62444bf42a25289c45425a00f2.png)
的焦点,且与
交于
两点,若使
的直线
恰有2条,则
的取值范围为( )
![](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/9fc58c62444bf42a25289c45425a00f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25d9e95179355496c844491e954ce1dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ae1567d8f98fabc1a3948f8602cc5e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56387ff53874620addcb0b91a605a309.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2 . 过抛物线
焦点的弦
的中点横坐标为
,则弦
的长度为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
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2024-04-19更新
|
512次组卷
|
2卷引用:上海市虹口区2024届高三下学期期中学生学习能力诊断测试(二模)数学试卷
3 . 平面内动点
到点
的距离与到直线
距离相等.
(1)求动点
的轨迹方程
;
(2)设过点
的直线
交动点
的轨迹于
两点,求
值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be92f0e0012a7696c78e3e00513edefd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/639c3d2ff5ee566fcc1b69c65712a661.png)
(1)求动点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设过点
![](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/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e3a1467ecf286e3cadaf5aa006606f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea6a6297f8414ef9d5af1de2d3343750.png)
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4 . 已知抛物线
的焦点为
,直线
过
且与抛物线交于
两点,过
作抛物线准线的垂线,垂足为
,
的角平分线与抛物线的准线交于点
,线段
的中点为
.若![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe495d873b903d0e8d1d3a979d9c58fb.png)
__________ .
![](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/0f85fca60a11e1af2bf50138d0e3fe62.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f2dcbf20cfa04c55a86134b0d217684.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe495d873b903d0e8d1d3a979d9c58fb.png)
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2023-03-01更新
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2卷引用:四川省成都市双流区双流中学2020-2021学年高二下学期4月月考数学文科试题
5 . 阿基米德(公元前287年—公元前212年)是古希腊伟大的物理学家、数学家、天文学家,不仅在物理学方面贡献巨大,还享有“数学之神”的称号.抛物线上任意两点
,
处的切线交于点
,称
为“阿基米德三角形”,当线段
经过抛物线焦点
时,
具有以下特征:(1)
点必在抛物线的准线上;(2)
为直角三角形,且
;(3)
.已知过抛物线
焦点的直线
与抛物线交于
,
两点,过点
,
处的切线交于点
,若点
的横坐标为
,则直线
的方程为( )
![](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/2205cffebf8c4d5f81d15ed7b85c8936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83640592853a53872d7af69c0cffc1bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c80406e8beb743b122bd7b021671c780.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6fdedd1db38755989cd462c151f5106.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
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589次组卷
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9卷引用:河南省开封市五县2021-2022学年高二下学期期末考试数学(理科)试题
河南省开封市五县2021-2022学年高二下学期期末考试数学(理科)试题(已下线)专题16 数学实际应用题陕西省西安市鄠邑区2022-2023学年高二上学期期末理科数学试题2.3.1 两直线的平行与垂直(同步练习提高版)(已下线)重难点03: 直线与抛物线的位置关系(分层练习)-2023-2024学年高二数学同步精品课堂(北师大版2019选择性必修第一册)福建省厦门市国贸协和双语高级中学有限公司2023-2024学年高二上学期11月期中考试数学试题福建省厦门市国贸协和双语高级中学2023-2024学年高二上学期第二次月考数学试题(已下线)专题1 千年古图 巧用定理 练(已下线)专题1.3 两条直线的平行与垂直(2个考点五大题型)-2023-2024学年高二数学《重难点题型·高分突破》(苏教版2019选择性必修第一册)
名校
解题方法
6 . 已知过抛物线
焦点F的直线与抛物线交于A、B两点,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88bee8e70f1fab639be1636c7bce0477.png)
_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ac62b1ade07205ae2693ec1ab135def.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9582f0b18051d1d0a4424caa69b71c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88bee8e70f1fab639be1636c7bce0477.png)
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4卷引用:宁夏吴忠市吴忠中学2021-2022学年高二下学期期中考试数学(文)试题
宁夏吴忠市吴忠中学2021-2022学年高二下学期期中考试数学(文)试题上海市松江区2021-2022学年高二下学期期末数学试题新疆维吾尔自治区喀什地区巴楚县第一中学2023-2024学年高二上学期12月月考数学试题(已下线)3.3.2 抛物线的简单几何性质【第一练】“上好三节课,做好三套题“高中数学素养晋级之路
解题方法
7 . 直线l过抛物线
的焦点F,且l与该抛物线交于不同的两点
,
.若
,则弦AB的长是____
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b072ff6d1b83232bebd7d4709ffba4ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12a3efb79f35db8448f3391252ab7d4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8df332f01628130c084fd46aaca0a4b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/192bef2c324358538caf123d972224a7.png)
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8 . 已知抛物线
的焦点为
,点
在抛物线
上,点
在抛物线
的准线
上,若
,且
,则
到
的距离为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37ab7408ffcefcb8e5e1ad4a9c58f1b1.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52c2cd1a320139bb46d1d26f87d7c8ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/717a112d118cf1891a59535ea7d17414.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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2022-02-26更新
|
267次组卷
|
2卷引用:1号卷·A10联盟2022届高三下学期开年考文科数学试卷
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解题方法
9 . 根据抛物线的光学性质可知,从抛物线的焦点发出的光线经该抛物线反射后与对称轴平行,一条平行于对称轴的光线经该抛物线反射后会经过抛物线的焦点.如图所示,从
沿直线
发出的光线经抛物线
两次反射后,回到光源接收器
,则该光线经过的路程为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/1/8fc3e580-077b-42d9-87d9-460fe49cae88.png?resizew=140)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b4a2b6903a43f3b11cafb03bc23f02a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f617b6bfb31dc4556a0e9f1f547164ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07ee70f162a8e6d8b4da58b6189b0b33.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/1/8fc3e580-077b-42d9-87d9-460fe49cae88.png?resizew=140)
A.11 | B.12 | C.13 | D.14 |
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10 . 过抛物线
焦点
的直线
交拋物线于
两点,若两点的横坐标之和为5,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b998f232a34711a14a99116248495526.png)
___________ .
![](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/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b998f232a34711a14a99116248495526.png)
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