解题方法
1 . 已知点P是抛物线y2=2x上的动点,点P在y轴上的射影是M,点
,则|
的最小值是_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/613ca5ec3f8220941c0455da7084767c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2bf9745b2e4505e5304ebda38f71906.png)
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2 . 已知抛物线
:
的焦点为
,抛物线
上一点
位于第一象限,且满足
,则以点
为圆心,
为半径的圆的方程为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7bf417767442935d2b9e49d18fbea79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
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2022-03-15更新
|
730次组卷
|
4卷引用:天津市河西区2021-2022学年高三上学期期末数学试题
天津市河西区2021-2022学年高三上学期期末数学试题(已下线)临考押题卷04-2022年高考数学临考押题卷(天津卷)天津市咸水沽第一中学2022届高三下学期高考临考押题卷数学试题(已下线)重难点11九种直线和圆的方程的解题方法-3
解题方法
3 . 已知抛物线
的焦点为F,若抛物线上一点P到x轴的距离为2,则|PF|的值为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42102c1c07562853219ca5918803a27.png)
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名校
解题方法
4 . 在棱长为1的正方体
中,球
同时与以A为公共顶点的三个面相切,球
同时与以
为公共顶点的三个面相切,且两球相切于点F.若以F为焦点,
为准线的抛物线经过
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78e021ec9cde38dd7bd65f33b7ab1b99.png)
___________ ,设球
,
的半径分别为
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/636484b36fe3e57c4f0deb0b4c1a6dfd.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f919bd3dde10dbbc076f7ec5149699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c4f6f74444b2b7947fc6e35c8d62322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83c09eec4e14a861af83d7828797d176.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f919bd3dde10dbbc076f7ec5149699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c4f6f74444b2b7947fc6e35c8d62322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78e021ec9cde38dd7bd65f33b7ab1b99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f919bd3dde10dbbc076f7ec5149699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c4f6f74444b2b7947fc6e35c8d62322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2858005b9ae89ae080d83dcc13cf8e81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b3e95410f3b4fcb0cba425b521d1f67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/636484b36fe3e57c4f0deb0b4c1a6dfd.png)
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解题方法
5 . 已知直线
,
,
为抛物线
上一点,则
到这两条直线距离之和的最小值为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d449bce9cc0a12d40b5bde32547973c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b7526e0cde0ca10ce6ce5954caefc26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bb4dd4670828f75bc573b52cdd02e1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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2022-02-25更新
|
248次组卷
|
2卷引用:江西省景德镇市第一中学2021-2022学年高二上学期期末数学(文)试题
名校
6 . 抛物线
的焦点为F,点A是E的准线与坐标轴的交点,点P在E上,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c687952080ab6f05cdf6ae04f66a40af.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b527ec9f92467b8f24554a2a67ee987.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7cca716c36dffd6979245ba6a089d81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c687952080ab6f05cdf6ae04f66a40af.png)
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2022-02-21更新
|
1072次组卷
|
4卷引用:福建省福州市2022届高三上学期期末质量抽测数学试题
福建省福州市2022届高三上学期期末质量抽测数学试题中国人民大学附属中学2022届高三下学期数学统一练习(1)试题(已下线)解密20 抛物线(分层训练)-【高频考点解密】2022年高考数学二轮复习讲义+分层训练(全国通用)浙江省杭州市西湖高级中学2021-2022学年高二下学期期中考试数学试题
7 . 若抛物线
:
上的一点
到它的焦点的距离为3,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df5be1440d099f464ef46dee39de6010.png)
__ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7089148c36cb3c39af71de653756396a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e34df226b1eb82515842ab0799f71a42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df5be1440d099f464ef46dee39de6010.png)
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8 . 已知抛物线
的焦点为
,过
作一条直线与抛物线
及其准线都相交,交点从左到右依次为
,若
,则线段
的中点到
轴的距离为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f4fb72e39d79b7a0cd892fa5fa34bb7.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecc5c20a3be40b35b75acfa4358ab241.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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9 . 过点
的直线与抛物线
相交于
,
两点,
,则直线
的方程为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e9b5e076078240e0c5ad9763a9824d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.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/73cdd39e76a61ba4de9dc633dafcf4d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
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2022-02-13更新
|
450次组卷
|
4卷引用:四川省达州市2021-2022学年高二上学期期末数学(理)试题
10 . 已知抛物线
的顶点为O,焦点为F,动点B在C上,若点B,O,F构成一个斜三角形,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b603cb4020402bed58b417d7f4754239.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2a21beb3c88e85fd5891d3a98fdd9ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b603cb4020402bed58b417d7f4754239.png)
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