1 . 如图,已知抛物线
,点
是
轴上的一点,经过点
且斜率为
的直线
与抛物线相交于
两点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/1/a6195d3e-1ea9-486f-8896-5c8409185302.png?resizew=184)
(1)当点
在
轴上时,求线段
的中点轨迹方程;
(2)若
(
为坐标原点),求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fe4b59c2f40deafebe46420af82cf03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/1/a6195d3e-1ea9-486f-8896-5c8409185302.png?resizew=184)
(1)当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cf12b2d13c0c1e95278d6340bbaa668.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
2016-12-03更新
|
672次组卷
|
2卷引用:2015届浙江省嘉兴市高三9月学科基础知识测试理科数学试卷
2 . 已知抛物线C的顶点为O(0,0),焦点F(0,1)
(Ⅰ)求抛物线C的方程;
(Ⅱ)过F作直线交抛物线于A、B两点.若直线OA、OB分别交直线l:y=x﹣2于M、N两点,求|MN|的最小值.
(Ⅰ)求抛物线C的方程;
(Ⅱ)过F作直线交抛物线于A、B两点.若直线OA、OB分别交直线l:y=x﹣2于M、N两点,求|MN|的最小值.
![](https://img.xkw.com/dksih/QBM/2014/5/22/1571735511040000/1571735516848128/STEM/1f9d7a30af3c4fc9992e2131b93d7641.png)
您最近一年使用:0次
2016-12-03更新
|
4602次组卷
|
21卷引用:2013年普通高等学校招生全国统一考试文科数学(浙江卷)
2013年普通高等学校招生全国统一考试文科数学(浙江卷)(已下线)专题9.8 直线与圆锥曲线的位置关系(练)-浙江版《2020年高考一轮复习讲练测》2015届湖南省长沙市雅礼中学高三5月一模文科数学试卷湖南省师大附中2019-2020学年高三上学期10月月考数学试题湖南师范大学附属中学2019-2020学年高三上学期第二次月考数学(理)试卷2020届湖北省黄冈中学高三下学期2月月考数学(理)试题湖北省黄石二中2019-2020学年高三下学期3月线上测试理科数学试题福建省福州市2019-2020学年高三5月调研卷理科数学试题(已下线)专题11 圆锥曲线的几何性质问题 第一篇 热点、难点突破篇(讲)-2021年高考数学二轮复习讲练测(浙江专用)(已下线)专题08 平面解析几何-十年(2012-2021)高考数学真题分项汇编(浙江专用)2015-2016学年河南省许昌高中等校高二下第一次联考理科数学试卷2015-2016学年河南省许昌高中等校高二下第一次联考文科数学试卷【全国百强校】湖南师范大学附属中学2018-2019学年高二下学期期中考试数学(文)试题江苏省扬州市邗江中学2020-2021学年高二上学期期中数学试题高中数学解题兵法 第五十二讲 配方法江苏省常州高级中学2022届高三下学期一模适应性考试2数学试题四川省成都名校2023届高三高考考前冲刺模拟(一)理科数学试题(已下线)专题08 配方法与二次型函数最值问题(一题多变)(已下线)专题08 直线和圆的方程的压轴题(二)-【尖子生专用】2021-2022学年高二数学考点培优训练(人教A版2019选择性必修第一册)重庆南开(融侨)中学2022-2023学年高二上学期线上教学检测数学试题3.3 抛物线
11-12高三·浙江·期末
3 . 已知抛物线
的顶点是椭圆
的中心,焦点与该椭圆的右焦点重合.
(1)求抛物线
的方程;
(2)已知动直线
过点
,交抛物线
于
两点.
①若直线
的斜率为
,求
的长;
②是否存在垂直于
轴的直线
被以
为直径的圆
所截得的弦长恒为定值?如果存在,求出
的方程;如果不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cae00bdc6f8b564b6b15b32572c848b.png)
(1)求抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
(2)已知动直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c153027427477bcd0a7228b14ce96cc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
①若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
②是否存在垂直于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2012·浙江嘉兴·一模
解题方法
4 . 已知圆
:
和抛物线
:
,圆的切线
与抛物线
交于不同的两点
,
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/13/9d1c64b8-5f71-45d2-8f04-790f96616df3.png?resizew=185)
(1)当直线
的斜率为1时,求线段
的长;
(2)设点
和点
关于直线
对称,问是否存在直线
使得
?若存在,求出直线
的方程;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46bc127c9c0a1e1a410f0cecddc4597b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b072ff6d1b83232bebd7d4709ffba4ef.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://img.xkw.com/dksih/QBM/editorImg/2023/3/13/9d1c64b8-5f71-45d2-8f04-790f96616df3.png?resizew=185)
(1)当直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)设点
![](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/d77f5191798242b7b9b88a75e17e4425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35b68262dfb35e058124edbe859fa186.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
您最近一年使用:0次
11-12高三上·浙江嘉兴·阶段练习
名校
5 . 已知抛物线
的顶点在原点,焦点在
轴正半轴上,点
到其准线的距离等于
.
(Ⅰ)求抛物线
的方程;
(Ⅱ)如图,过抛物线
的焦点的直线从左到右依次与抛物线
及圆
交于
、
、
、
四点,试证明
为定值.
![](https://img.xkw.com/dksih/QBM/2011/11/9/1570346597523456/1570346603012096/STEM/f35dc38c08354d48926a00e9f905751b.png?resizew=201)
(Ⅲ)过
、
分别作抛物
的切线
、
,且
、
交于点
,求
与
面积之和的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59c0980761f2c189bb51b9c12a79d77d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d91e07104b699c4012be2d26160976a2.png)
(Ⅰ)求抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
(Ⅱ)如图,过抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b454cdb97c408300b50d945f002c2cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e318cefab1d71238b6a770e9d5fe154e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ba9fc9ae9bc7000a7f3daba16091a02.png)
![](https://img.xkw.com/dksih/QBM/2011/11/9/1570346597523456/1570346603012096/STEM/f35dc38c08354d48926a00e9f905751b.png?resizew=201)
(Ⅲ)过
![](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/4b454cdb97c408300b50d945f002c2cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0288f5a9e234c0fc858c89f0a30c003b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd2640a7425ddd37334d14a5443479b3.png)
您最近一年使用:0次
2010·浙江杭州·二模
解题方法
6 . 已知直线
,曲线![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f60c8ef1253c3395978548c600fa689.png)
(1)若
且直线与曲线恰有三个公共点时,求实数
的取值;
(2)若
,直线与曲线
的交点依次为
四点,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f24e616b5a35ff372c78c1472f156ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f60c8ef1253c3395978548c600fa689.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5095a28bb1b91bf6bed9e2cfbd76bb18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a3c442579603164f3fc19458677d307.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c82a10b4f0c9323d726804c89dd9548.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/532fb9d8a0715b513e9e3f144ea264e9.png)
您最近一年使用:0次