名校
解题方法
1 . 如图所示,一种建筑由外部的等腰梯形PQRS、内部的抛物线以及水平的杠杆AB组成,其中PS和QR分别与抛物线相切于A,B,A,B分别是PS和QR的中点.梯形的高和CD的长度都是4米.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/19/ee4a6502-4dc5-40af-ad3d-e4baf0e8d947.png?resizew=147)
(1)求杠杆AB的长度;
(2)求等腰梯形的周长.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/19/ee4a6502-4dc5-40af-ad3d-e4baf0e8d947.png?resizew=147)
(1)求杠杆AB的长度;
(2)求等腰梯形的周长.
您最近一年使用:0次
名校
解题方法
2 . 如图,已知
为二次函数
的图像上异于顶点的两个点,曲线
在点
处的切线相交于点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/14/b1c9ee20-7af4-4018-a49a-6703b2da8013.png?resizew=203)
(1)利用抛物线的定义证明:曲线
上的每一个点都在一条抛物线上,并指出这条抛物线的焦点坐标和准线方程;
(2)求证:
成等差数列,
成等比数列;
(3)设抛物线
焦点为
,过
作
垂直准线
,垂足为
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/031da5d48fbe63745429b1add253344f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c60b6eee6448a408616e1b61bd793f0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cf210c8c9e83e70f2d3ede1e18a5f3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/031da5d48fbe63745429b1add253344f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7775aa57ca0e62216f3039ed88dceed0.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/14/b1c9ee20-7af4-4018-a49a-6703b2da8013.png?resizew=203)
(1)利用抛物线的定义证明:曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cf210c8c9e83e70f2d3ede1e18a5f3d.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/297426b8f7938c8d14f42a481a19c3a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a2b440f7aac4b432fef8f4c9f8e3f76.png)
(3)设抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cf210c8c9e83e70f2d3ede1e18a5f3d.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/35d58f9019097bd05037aefd5c322916.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31b7a8d232e9a11f5d471f47a1294cd4.png)
您最近一年使用:0次
3 . 已知曲线
上任一点
与点
的距离与它到直线
的距离相等.
(1)求曲线
的方程;
(2)求过定点
,且与曲线
只有一个公共点的直线的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34eb4638d8710de2617cb94a36500f37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/122fa7155f6858a570e8dee2495822a3.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)求过定点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7517bbf7727937bd03aa75be66e3da45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
您最近一年使用:0次
名校
解题方法
4 . 给出如下的定义和定理:定义:若直线l与抛物线
有且仅有一个公共点P,且l与
的对称轴不平行,则称直线l与抛物线
相切,公共点P称为切点.定理:过抛物线
上一点
处的切线方程为
.完成下述问题:如图所示,设E,F是抛物线
上两点.过点E,F分别作抛物线
的两条切线
,
,直线
,
交于点C,点A,B分别在线段
,
的延长线上,且满足
,其中
.
,
,用
,
和p表示点C的坐标.
(2)证明:直线
与抛物线
相切;
(3)设直线
与抛物线
相切于点G,求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fc58c62444bf42a25289c45425a00f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23b4f86e48e2b0d63c1865c60ed1e4d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bae7891bf4fc3502b2e03f880998253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa877db8dc1b03f1581106dfd5211ac4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.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/1fc56c77464a17a1e97b568762a3e2c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e21f243dd613f3da6ed0fa0b666aad7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3be362dec96173f246ff747264007817.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54015ff5b49e3283901da1291b6b921d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54015ff5b49e3283901da1291b6b921d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
(2)证明:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
(3)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94469fd19f40116e2dec334919d6586.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7721f31efc94ed3e832f42610bc5369.png)
您最近一年使用:0次
2022-01-16更新
|
772次组卷
|
5卷引用:上海市复旦大学附属中学2021-2022学年高二上学期期末数学试题
上海市复旦大学附属中学2021-2022学年高二上学期期末数学试题(已下线)期末真题必刷压轴60题(22个考点专练)-【满分全攻略】2023-2024学年高二数学同步讲义全优学案(沪教版2020必修第三册)(已下线)上海市高二下学期期末真题必刷04(压轴题)--高二期末考点大串讲(沪教版2020选修)高考新题型-圆锥曲线(已下线)压轴题圆锥曲线新定义题(九省联考第19题模式)练
名校
解题方法
5 . 过抛物线外一点
作抛物线的两条切线,两切点的连线段称为点
对应的切点弦.已知抛物线为
,点
,
在直线
上,过
,
两点对应的切点弦分别为
,
.
(1)当点
在
上移动时,直线
是否经过某一定点,若有,请求出该定点的坐标;如果没有,请说明理由.
(2)当
时,求线段
长度的最小值,及此时点
,
的坐标.
![](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/e42102c1c07562853219ca5918803a27.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/d42502a5730e1930d77d7100d1e34707.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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
(1)当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a77e3c1c236141d6118429fade0a9b9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
您最近一年使用:0次
2021-01-19更新
|
188次组卷
|
2卷引用:上海市南洋模范中学2020-2021学年高二上学期期末数学试题
名校
6 . 已知抛物线
:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fc58c62444bf42a25289c45425a00f2.png)
,点
为直线
上任一点,过点
作抛物线的两条切线,切点分别为
,
,
(1)证明
,
,
三点的纵坐标成等差数列;
(2)已知当点
坐标为
时,
,求此时抛物线
的方程;
(3)是否存在点
,使得点
关于直线
的对称点
在抛物线
上,其中点
满足
,若存在,求点
的坐标;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fc58c62444bf42a25289c45425a00f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75de1947893e5c7a4d98d4458398fd6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/890c298f787328c5d87aefeacb7046ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(1)证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(2)已知当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42afb90a497722b87ea212e4f52dd017.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58168edb2306922360573f6ba14e90c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(3)是否存在点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294b1764653134976615a9f4f330c063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
您最近一年使用:0次
名校
解题方法
7 . 设
是抛物线![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6912176edce6aa986a6f6950f6dd5b0e.png)
上的动点,也是直线
与抛物线
唯一的公共点,直线
与抛物线
的对称轴相交,点
与抛物线
的焦点关于直线
对称,求动点
的轨迹方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/093fdad4ecbf29897af965532a367e82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6912176edce6aa986a6f6950f6dd5b0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b75ed10db4b9747a4b6d865b774f6b6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8e55590555905eb4f57889bbd16e39a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8e55590555905eb4f57889bbd16e39a.png)
您最近一年使用:0次
2012·浙江绍兴·一模
真题
名校
8 . 已知抛物线
的焦点
也是椭圆
的一个焦点,
与
的公共弦的长为
.
(1)求
的方程;
(2)过点
的直线
与
相交于
,
两点,与
相交于
,
两点,且
与
同向
(ⅰ)若
,求直线
的斜率
(ⅱ)设
在点
处的切线与
轴的交点为
,证明:直线
绕点
旋转时,
总是钝角三角形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d12b5e5ff59f1eea47300d8d7ca9167e.png)
![](https://img.xkw.com/dksih/QBM/2015/6/24/1572139784364032/1572139790524416/STEM/1b5dadb2d0254ae39179137f9f62b12a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83de9a16fe69aa19744801693652be7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b10e8abf8690e4b129466ddb918bcc94.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(2)过点
![](https://img.xkw.com/dksih/QBM/2015/6/24/1572139784364032/1572139790524416/STEM/1b5dadb2d0254ae39179137f9f62b12a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://img.xkw.com/dksih/QBM/2015/6/24/1572139784364032/1572139790524416/STEM/b7f07f80f1384d15aae1d30c7c85de89.png)
![](https://img.xkw.com/dksih/QBM/2015/6/24/1572139784364032/1572139790524416/STEM/448dbf30cc8e4bc481763b320e8b332c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://img.xkw.com/dksih/QBM/2015/6/24/1572139784364032/1572139790524416/STEM/90e27cdbda4a4503b9854b35f373d6e5.png)
![](https://img.xkw.com/dksih/QBM/2015/6/24/1572139784364032/1572139790524416/STEM/fd94db925ec94657b59172dc9e8fa645.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01adf0d0159e98cb1046f5aef71798fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/092c4c1a8a8907fdb0f85d5c2ddbe9dd.png)
(ⅰ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d4310f31f0d5e647db9470d3d6f2128.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(ⅱ)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://img.xkw.com/dksih/QBM/2015/6/24/1572139784364032/1572139790524416/STEM/b7f07f80f1384d15aae1d30c7c85de89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://img.xkw.com/dksih/QBM/2015/6/24/1572139784364032/1572139790524416/STEM/1b5dadb2d0254ae39179137f9f62b12a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f45e383e21a77afa60977c3f03cbc20b.png)
您最近一年使用:0次
2016-12-03更新
|
4560次组卷
|
10卷引用:上海市上师大附中 2018—2019学年高二上学期期末数学试题
上海市上师大附中 2018—2019学年高二上学期期末数学试题(已下线)2012届浙江省绍兴市第一中学高三回头考试文科数学2015年全国普通高等学校招生统一考试理科数学(湖南卷)天津市耀华中学2017届高三第一次校模拟考试数学(理)试题(已下线)技巧03 解答题解法与技巧 第二篇 解题技巧篇(讲)-2021年高考数学二轮复习讲练测(浙江专用)(已下线)第43讲 解析几何中的几何问题转化为代数问题-2022年新高考数学二轮专题突破精练河南省洛阳市2019-2020学年高三上学期尖子生第一次联考理科数学试题北京名校2023届高三二轮复习 专题五 解析几何 第3讲 直线与圆锥曲线的位置关系(已下线)专题24 解析几何解答题(理科)-3专题36平面解析几何解答题(第一部分)
9-10高二下·上海黄浦·期末
名校
9 . 若过点
的直线l与抛物线
有且只有一个交点,则这样的直线l共有条.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/344ab280020ded08d6ceeaee780253b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b072ff6d1b83232bebd7d4709ffba4ef.png)
A.1 | B.2 | C.3 | D.4 |
您最近一年使用:0次