名校
1 . 已知点
,
为抛物线
的焦点,点
在该抛物线上移动,当
周长取最小时,点
的坐标为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d12ed430d52fc0ba03785273eda3d1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b072ff6d1b83232bebd7d4709ffba4ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d3cbfdd47ac056dbdaa681462aa9433.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
您最近一年使用:0次
2 . 已知点
为抛物线
的焦点,点
在抛物线
上,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff24d4627c643c5aeee873c6e1e626aa.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2391c0e2fc44598610d519dacb778062.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f4fb72e39d79b7a0cd892fa5fa34bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/921502954d8f4c6e58a95487018a8a04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff24d4627c643c5aeee873c6e1e626aa.png)
您最近一年使用:0次
2016-12-04更新
|
497次组卷
|
2卷引用:重庆市第一中学校2023-20324学年高二上学期期中考试数学试题
3 . 已知点
为抛物线
上的一动点,则点
到点
的距离与点
到抛物线
准线的距离之和的最小值为__________ .
![](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)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40630a669f4eedf626bc24851df10c85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
您最近一年使用:0次
2018-03-14更新
|
402次组卷
|
3卷引用:重庆市蜀都中学2020-2021学年高二上学期12月月考数学试题
名校
4 . 抛物线
上一点
到焦点
的距离为6,
,
分别为抛物线与圆
上的动点,则
的最小值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7089148c36cb3c39af71de653756396a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f780548b88643998d199cb1276617f8e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/837fbc4862ae7c699199535d991234a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d968044241d03105c05c40fd6b94264.png)
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5 . 已知动点P到定点
的距离比到定直线
的距离小1,则点P的轨迹M的标准方程为________ ;A、B、C为该轨迹M上的三点,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80afbc5624168f1c5a81c2480ab7662b.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63309dbc3612815f6dbdee23d9a10adc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba53065eb180a682305fddb95d14b62f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cf6464f7c370cb56e9f581623793b94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80afbc5624168f1c5a81c2480ab7662b.png)
您最近一年使用:0次
2020-12-30更新
|
136次组卷
|
2卷引用:重庆市三峡名校联盟2020-2021学年高二上学期联考数学试题
名校
解题方法
6 . 设抛物线
的焦点为
,过点
作直线
与抛物线分别交于两点
,若点
满足
,过
作
轴的垂线与抛物线交于点
,若
,则
点的横坐标为__________ .
![](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/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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a8557898f1c943a431801ecfb06ed84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0a0328dde917c3e6d0f1ca9ddb6027b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
您最近一年使用:0次
2017-02-27更新
|
877次组卷
|
5卷引用:2017届重庆市高三学业质量调研抽测(第一次)数学(理)试卷
名校
7 . 抛物线
上一点
到焦点的距离为2,则点
的横坐标为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e8953ded144195804384dcb494d5e2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
您最近一年使用:0次
名校
8 . 抛物线
上一点
到焦点的距离为5,则点
的横坐标是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
您最近一年使用:0次
2016-12-05更新
|
1308次组卷
|
7卷引用:2016-2017学年重庆巴蜀中学高二理上月考一数学试卷
2016-2017学年重庆巴蜀中学高二理上月考一数学试卷甘肃省天水市一中2017-2018学年高二上学期第三次(期末)考试数学(文)试题安徽省宣城市2018届高三第二次调研测试数学文试题(已下线)2018年12月9日 《每日一题》文数人教选修1-1-每周一测(已下线)2018年12月9日 《每日一题》理科数学人教选修2-1-每周一测2019年上海市普陀区高三高考三模数学试题沪教版(2020) 25天高考冲刺 双新双基百分百15
名校
9 . 抛物线
上一点
的纵坐标为3,则点
到抛物线焦点的距离为_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10f4123c19136d3a4dc040dce8e34e14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
您最近一年使用:0次
2018-04-08更新
|
422次组卷
|
2卷引用:重庆市巴蜀中学2018届高三适应性月考(八,3月)数学(理)试题
10 . 已知抛物线
的焦点为
,过点
的直线与抛物线![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
相交于点
(点
位于第一象限),与它的准线相交于点
,且点
的纵坐标为
,
,则实数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df5be1440d099f464ef46dee39de6010.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/479aa271617de0fd3c96f7c70c2ac5c3.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)
相交于点
![](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)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f55d81fe576a578715e9a755ddc8f59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df5be1440d099f464ef46dee39de6010.png)
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