真题
1 . 如图,在正方形
中,
为坐标原点,点
的坐标为
,点
的坐标为
,分别将线段
和
十等分,分点分别记为
和
,连接
,过
作
轴的垂线与
交于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/30/e997deb5-7d8c-4a23-8e7d-9bc2fda00628.png?resizew=232)
(1)求证:点
都在同一条抛物线上,并求抛物线
的方程;
(2)过点
作直线
与抛物线E交于不同的两点
, 若
与
的面积之比为4:1,求直线
的方程.
![](https://img.xkw.com/dksih/QBM/2013/7/17/1571285821030400/1571285826740224/STEM/b498417e94664eafb82182244815666b.png)
![](https://img.xkw.com/dksih/QBM/2013/7/17/1571285821030400/1571285826740224/STEM/7c112e9565b1465eb2e5a3b85a712dc0.png)
![](https://img.xkw.com/dksih/QBM/2013/7/17/1571285821030400/1571285826740224/STEM/f3a6bda3bcfb49a499a7d9c72e4147d3.png)
![](https://img.xkw.com/dksih/QBM/2013/7/17/1571285821030400/1571285826740224/STEM/9e03be5fe78342ecab16e0ba92d12160.png)
![](https://img.xkw.com/dksih/QBM/2013/7/17/1571285821030400/1571285826740224/STEM/cd446378de7d414c90caea52f7d0fb8d.png)
![](https://img.xkw.com/dksih/QBM/2013/7/17/1571285821030400/1571285826740224/STEM/0712f90b2ce64665a466b500944e8d11.png)
![](https://img.xkw.com/dksih/QBM/2013/7/17/1571285821030400/1571285826740224/STEM/08f042a3627a45f39e454b852dd2fe18.png)
![](https://img.xkw.com/dksih/QBM/2013/7/17/1571285821030400/1571285826740224/STEM/04512feccf3b4657863aaacaa165a3dd.png)
![](https://img.xkw.com/dksih/QBM/2013/7/17/1571285821030400/1571285826740224/STEM/160447982d7140708e1000bb8ca9004e.png)
![](https://img.xkw.com/dksih/QBM/2013/7/17/1571285821030400/1571285826740224/STEM/bdb7aab1fce845e99d6a1199b0585400.png)
![](https://img.xkw.com/dksih/QBM/2013/7/17/1571285821030400/1571285826740224/STEM/28c4808cf0f44f67a3ce2d155c9401e8.png)
![](https://img.xkw.com/dksih/QBM/2013/7/17/1571285821030400/1571285826740224/STEM/389d6d97d2834b3baf492434165c7eb2.png)
![](https://img.xkw.com/dksih/QBM/2013/7/17/1571285821030400/1571285826740224/STEM/013358da4bf94ec9b3cffd4cf85daf0b.png)
![](https://img.xkw.com/dksih/QBM/2013/7/17/1571285821030400/1571285826740224/STEM/28c4808cf0f44f67a3ce2d155c9401e8.png)
![](https://img.xkw.com/dksih/QBM/2013/7/17/1571285821030400/1571285826740224/STEM/b3a87e5d10fd4fc98360588699d8dcd4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/30/e997deb5-7d8c-4a23-8e7d-9bc2fda00628.png?resizew=232)
(1)求证:点
![](https://img.xkw.com/dksih/QBM/2013/7/17/1571285821030400/1571285826740224/STEM/b3a87e5d10fd4fc98360588699d8dcd4.png)
![](https://img.xkw.com/dksih/QBM/2013/7/17/1571285821030400/1571285826740224/STEM/66459661444e4b168c6c551120ca90c8.png)
(2)过点
![](https://img.xkw.com/dksih/QBM/2013/7/17/1571285821030400/1571285826740224/STEM/cd446378de7d414c90caea52f7d0fb8d.png)
![](https://img.xkw.com/dksih/QBM/2013/7/17/1571285821030400/1571285826740224/STEM/a76ec79621e243d38c6ae6eb688b09e9.png)
![](https://img.xkw.com/dksih/QBM/2013/7/17/1571285821030400/1571285826740224/STEM/adef4628165b4a6795641c5bb66353ea.png)
![](https://img.xkw.com/dksih/QBM/2013/7/17/1571285821030400/1571285826740224/STEM/5d7d247e65a540c7863673c9c5964695.png)
![](https://img.xkw.com/dksih/QBM/2013/7/17/1571285821030400/1571285826740224/STEM/1b538f7be4264129a0c97dafa60a1eba.png)
![](https://img.xkw.com/dksih/QBM/2013/7/17/1571285821030400/1571285826740224/STEM/a76ec79621e243d38c6ae6eb688b09e9.png)
您最近一年使用:0次
2 . 在平面直角坐标系
中,动点
到点
的距离比它到
轴的距离多1.
(Ⅰ)求点
的轨迹
的方程;
(Ⅱ)过点
任作直线
,交曲线
于
两点,交直线
于点
,
是
的中点,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/055a2ef09e2ee0948cf67c58de58732d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
(Ⅰ)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(Ⅱ)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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff32df158dd2d590af5646657afb0101.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/145ef2d91a57e6ea189c0cf1232e81c3.png)
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2016-12-04更新
|
1635次组卷
|
2卷引用:2016届新疆乌鲁木齐地区高三第二次诊断性测验理科数学试卷
2013·广东广州·一模
3 . 经过点
且与直线
相切的动圆的圆心轨迹为
.点
、
在轨迹
上,且关于
轴对称,过线段
(两端点除外)上的任意一点作直线
,使直线
与轨迹
在点
处的切线平行,设直线
与轨迹
交于点
、
.
(1)求轨迹
的方程;
(2)证明:
;
(3)若点
到直线
的距离等于
,且△
的面积为20,求直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad43fd96bf0f234fcb7de9e571d99db7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71c1c336cf4c00210b40827437968871.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://img.xkw.com/dksih/QBM/2013/8/29/1571330093465600/1571330099355648/STEM/2973cc7364c9434499e8c76b3422ecb4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)求轨迹
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf80526fca6ef00f069e5e6a32a379c8.png)
(3)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fa7e9bbf6117b9779cb24add1dc9c54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
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4 . 在平面直角坐标系
中,
是抛物线
的焦点,
是抛物线
上位于第一象限内的任意一点,过
三点的圆的圆心为
,点
到抛物线
的准线的距离为
.
(1)求抛物线
的方程;
(2)当过点
的动直线
与抛物线
相交于不同点
时,在线段
上取点
,满足
,证明:点
总在某定直线上.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bf92a1ba410263d4f68b7e0432b19aa.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/76e4a04771a93c113c8617588daba23d.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b2a698891d42c70b597f0da4f215f09.png)
(1)求抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)当过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8115c09f801cf0bb02293baef7bf137.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/01c74a907dda6bb7d9d56d009d9df253.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/a6a874ed494876a12e300ab6c812f212.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
您最近一年使用:0次
2016-12-04更新
|
2531次组卷
|
6卷引用:2016届安徽省合肥一中高三下学期冲刺模拟理科数学C卷
2016届安徽省合肥一中高三下学期冲刺模拟理科数学C卷(已下线)专题12 定比点差法及其应用 微点2 定比点差法综合应用(一)——解决定点、定值、定直线问题(已下线)第10讲 高考难点突破二:圆锥曲线的综合问题(定值问题) (精讲)(已下线)专题18 圆锥曲线高频压轴解答题(16大题型)(练习)(已下线)第12讲 第三章 圆锥曲线的方程 章末重点题型大总结(2)(已下线)第06讲 拓展三:直线与抛物线的位置关系-【练透核心考点】2023-2024学年高二数学上学期重点题型方法与技巧(人教A版2019选择性必修第一册)
2012·上海长宁·二模
5 . 设抛物线
的焦点为
,过
且垂直于
轴的直线与抛物线交于
两点,已知
.
(1)求抛物线
的方程;
(2)设
,过点
作方向向量为
的直线与抛物线
相交于
两点,求使
为钝角时实数
的取值范围;
(3)①对给定的定点
,过
作直线与抛物线
相交于
两点,问是否存在一条垂直于
轴的直线与以线段
为直径的圆始终相切?若存在,请求出这条直线;若不存在,请说明理由.
②对
,过
作直线与抛物线
相交于
两点,问是否存在一条垂直于
轴的直线与以线段
为直径的圆始终相切?(只要求写出结论,不需用证明)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf5ec49789b5313a602706e0ffe67a36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://img.xkw.com/dksih/QBM/2012/6/28/1570903897178112/1570903902568448/STEM/f311ab4627564b46ab60ef418f878744.png?resizew=13)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ea1e00d2981160ba61a036681bef70e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1de23a5e7a4949034db018857c11cc6c.png)
(1)求抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8aa5c24766744e194574d31ca534c18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53c728334a9352ba1c820509532dc37d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae57d518ebd02b9c3f888ba8348ad970.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/9184769fa5ffff059239f963e2a5ac4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(3)①对给定的定点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4710e203c36ceafbfde7e9568ea7ac71.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/7ae1567d8f98fabc1a3948f8602cc5e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
②对
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9732bfb7e9cc508df1936f93a5afb0c.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/7ae1567d8f98fabc1a3948f8602cc5e7.png)
![](https://img.xkw.com/dksih/QBM/2012/6/28/1570903897178112/1570903902568448/STEM/f311ab4627564b46ab60ef418f878744.png?resizew=13)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
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