1 . 在平面直角坐标系
中,设点
,直线
:
,点
在直线
上移动,
是线段
与
轴的交点,
,
.
(1)求动点
的轨迹
的方程;
(2)直线
与曲线
交于
,
两点,
是否为定值,若是求出该定值,若不是说明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2ba2238d6afe0187534155dd9ac48c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99c6875d552e9fff3c7d655f3a59b166.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/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb26d84907c923278ac4626a9d58947.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b7aa3a192ade4294c7bbfe3937984bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5b9d83969b6a8e27e57ab71b34e2b81.png)
(1)求动点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26ffdc52431c6a72917f331ad3b3355d.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/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ace585d3cc2e113a0927cdf9e56756a.png)
您最近一年使用:0次
名校
2 . 古希腊的几何学家用平面去截一个圆锥面,将所截得的不同的截线称为圆锥曲线.某同学用平行于母线PA且过母线PB的中点M的平面去截圆锥,所得截线为如图所示的抛物线.若该圆锥的高
,底面半径
,则该抛物线焦点到准线的距离为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/2/391773fd-cf5d-4c7c-930b-0c749f8df6ea.png?resizew=174)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6183ebae6c95c17a4e0ab017e12ae8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11f16e77b039842ae40a4b04c527655a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/2/391773fd-cf5d-4c7c-930b-0c749f8df6ea.png?resizew=174)
A.![]() | B.3 | C.![]() | D.![]() |
您最近一年使用:0次
2021-03-22更新
|
833次组卷
|
4卷引用:内蒙古呼和浩特市2021届高考第一次质量普查调研考试(一模)理科数学试题
内蒙古呼和浩特市2021届高考第一次质量普查调研考试(一模)理科数学试题江西省新余市第一中学2021届高三全真模拟考试数学(理)试题(已下线)押第11题 圆锥曲线-备战2021年高考数学(文)临考题号押题(全国卷2)(已下线)解密20 抛物线(分层训练)-【高频考点解密】2021年高考数学(理)二轮复习讲义+分层训练
解题方法
3 . 已知抛物线
的准线经过点
,过点
的直线
与抛物线
有两个不同的交点
,点
其中
在抛物线
上,且直线
交
轴于
,直线
交
轴于
.
(1)求直线
斜率的取值范围;
(2)设
为原点,若
,求证:
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e6c830bfa9a1b979a1a9665166424bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d0037eb5cb1ad4865f51c75de90d0da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e241c20dbb4f324b6491da9f75222c9a.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/b4e67784a7d61ecbe9aa872824839d59.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17f06dee2b6ccd65644064249183787e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
(1)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f3bcded929b9721b2a6bf6c7b7d9f26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/587b693b82241eb9c32cdbb96c209f33.png)
您最近一年使用:0次
解题方法
4 . 已知抛物线
的焦点为F,且F与圆
上点的距离的最大值为8.
(1)求抛物线M的方程;
(2)若点Q在C上,QA,QB为M的两条切线,A,B是切点(A在B的上方),求
面积的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fbb6cbf601c8d08db363827baefc296.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/553b19083c401c2fd2486c6297a92d14.png)
(1)求抛物线M的方程;
(2)若点Q在C上,QA,QB为M的两条切线,A,B是切点(A在B的上方),求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16e8c7968d57d2a20065a7cb15c9b4eb.png)
您最近一年使用:0次
2022-03-23更新
|
494次组卷
|
2卷引用:内蒙古包头市2022届高三第一次模拟考试理科数学试题
解题方法
5 . 拋物线C的顶点为坐标原点O,焦点在x轴上,直线l:
交C于P,Q两点,且
.已知点M的坐标为
,
与直线l相切.
(1)求抛物线C和
的标准方程;
(2)已知点
,点
,
是C上的两个点,且直线
,
均与
相切.判断直线
与
的位置关系,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/707ea658f3a9359f5740d5aab48f7948.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc7df99fe6438442a9453fc0c57fb703.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00ed24bfcc37b79fe9ca61ed8fdf26ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fef27cb7cb1b666c1734c65a7aa9aa4.png)
(1)求抛物线C和
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fef27cb7cb1b666c1734c65a7aa9aa4.png)
(2)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d49681a83aa1cb850b237222749227a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/443a82723ae5cf11aa917362e7db003f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a439c8a01a6626d7a3f53af31ef0bcae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fef27cb7cb1b666c1734c65a7aa9aa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/473913c0887bb64d386f4c02f1853452.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fef27cb7cb1b666c1734c65a7aa9aa4.png)
您最近一年使用:0次
6 . 已知抛物线
的焦点为F,准线为l,过抛物线上一点P作准线l的垂线,垂足为Q,若
,则
( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bb4dd4670828f75bc573b52cdd02e1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb9d6d73a3932f58aa44b282099058fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cd05d243091ba3ec8da3d33fc5956e2.png)
A.![]() | B.2 | C.![]() | D.![]() |
您最近一年使用:0次
2022-03-27更新
|
463次组卷
|
3卷引用:内蒙古包头市第四中学2022届高三第四次校内模拟文科数学试题
解题方法
7 . 已知抛物线上任意一点
满足
的最小值为1(
为焦点).
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24b106049ba15e518dcb92b081b2654f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b6507b5e6c7e87f0f400c7c2d03cc7b.png)
您最近一年使用:0次
解题方法
8 . 已知抛物线
的焦点为F,且F与圆
上点的距离的最大值为8.
(1)求抛物线M的方程;
(2)若点Q在C上,QA,QB为M的两条切线,A,B是切点(A在B的上方),当直线AB垂直x轴时,求△QAB的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3baa6d3cf25af55055fb8e1c4dcccd91.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73b9a63cc4145ca6c9973da5ef0770da.png)
(1)求抛物线M的方程;
(2)若点Q在C上,QA,QB为M的两条切线,A,B是切点(A在B的上方),当直线AB垂直x轴时,求△QAB的面积.
您最近一年使用:0次
解题方法
9 . 已知抛物线
的焦点为
,直线
与抛物线
交于点
,且
.
(1)求抛物线
的方程;
(2)直线
与C交于A,B两点,点T在y轴上,直线
,
与C的另一个交点分别为D,E,且
,求T点的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e6c830bfa9a1b979a1a9665166424bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/971751ce826c71fb6ec79969d45a9fdc.png)
![](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/5b59fa819dda388090534b06bccee422.png)
(1)求抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c966320d637cab491c67425ef1338966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e98c4b3f3fe826e124ca7d199d4ca4b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/817a419430d9951cbdb89b657b21bcf0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c0aa4c793921fdaa5d430cb90d78ca6.png)
您最近一年使用:0次
2022-05-18更新
|
408次组卷
|
4卷引用:内蒙古科尔沁左翼中旗2022届高三考前押题数学试题
解题方法
10 . 已知抛物线
的焦点为
,过
且垂直与
轴的直线与
相交于
,
两点,若
(
为坐标原点)的面积为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df5be1440d099f464ef46dee39de6010.png)
________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bf92a1ba410263d4f68b7e0432b19aa.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/d053b14c8588eee2acbbe44fc37a6886.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/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b837fd9c52f60bfb3b6852733abc790.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df5be1440d099f464ef46dee39de6010.png)
您最近一年使用:0次
2022-05-29更新
|
412次组卷
|
3卷引用:内蒙古赤峰市2022届高三下学期5月模拟考试数学(文科)试题