2012·重庆·一模
解题方法
1 . 在直角坐标平面内,
轴右侧的一动点
到点
的距离比它到
轴的距离大![](https://staticzujuan.xkw.com/quesimg/Upload/formula/521e42b220eaac30bce6102bd8642104.png)
(1)求动点
的轨迹
的方程;
(2)设
为曲线
上的一个动点,点
,
在
轴上,若
为圆
的外切三角形,求
面积的最小值.
![](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/7e69ab37ec08667f1dfd09369561f717.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/521e42b220eaac30bce6102bd8642104.png)
(1)求动点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)设
![](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/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe51b50eca45db5d8ca5f4949c56d137.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6316e0e6da742e9b035d8f2cc91a4dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe51b50eca45db5d8ca5f4949c56d137.png)
您最近一年使用:0次
名校
2 . 已知曲线
上的任意一点
到点
的距离与到直线
的距离相等,直线
过点
,且与
交于
两点.
(1)求曲线
的方程;
(2)若
为
中点,求三角形
的面积.
![](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/1bf39100666da22db95d7f9e05741522.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99c6875d552e9fff3c7d655f3a59b166.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18a86f1a0a6fe539054129d9d62e9866.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c732a7b436822b8fb123d738e283fc4c.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd6c71a0da6a878a5b12bf8a8e784645.png)
您最近一年使用:0次
2017-03-06更新
|
324次组卷
|
4卷引用:2016-2017学年安徽省黄山市高二上学期期末质量检测数学(理)试卷
解题方法
3 . 在平面直角坐标系
中,
是抛物线
的焦点,圆
过
点与
点,且圆心
到抛物线
的准线的距离为
.
(1)求抛物线
的方程;
(2)已知抛物线上一点
,过点
作抛物线的两条弦
和
,且
,判断直线
是否过定点?并说明理由.
![](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/7e6c830bfa9a1b979a1a9665166424bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](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/a4b8503f4706b8321e4e79a87eadea84.png)
(1)求抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)已知抛物线上一点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5119b4a5b2276fbc0faf3b660bc90889.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be2e2c0d4ac2bd79f6cea7a9b1a50662.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ce6c0e9de83f2e64ae33609fc08459d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e21402367709de8a3cb28d3444d33a55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
您最近一年使用:0次
12-13高二上·云南大理·阶段练习
4 . 若抛物线y2=-2px(p>0)上有一点M,其横坐标为-9.它到焦点的距离为10,求抛物线方程和M点的坐标.
您最近一年使用:0次
2016-12-02更新
|
592次组卷
|
4卷引用:2011-2012学年云南大理宾川县四中高二1月月考文科数学试卷
(已下线)2011-2012学年云南大理宾川县四中高二1月月考文科数学试卷(已下线)第3章 2.1 抛物线及其标准方程(反馈达标训练)-2018年数学同步优化指导(北师大版选修2-1)(已下线)3.3.1+抛物线及其标准方程-2020-2021学年高二数学新教材配套学案(人教A版选择性必修第一册)(已下线)3.3.1 抛物线及其标准方程(学案)-2021-2022学年高二数学教材配套学案+课件+练习(人教A版2019选择性必修第一册)
解题方法
5 . 选修4-4:坐标系与参数方程
在平面直角坐标系
中,点
,直线
与动直线
的交点为
,线段
的中垂线与动直线
的交点为
.
![](https://img.xkw.com/dksih/QBM/2017/5/6/1681346041446400/1681863787331584/STEM/5c7dcadce0524bfcba9e3469f1ed2d22.png?resizew=160)
(1)求动点
的轨迹
的方程;
(2)过动点
作曲线
的两条切线,切点分别为
,
,求证:
的大小为定值.
在平面直角坐标系
![](https://img.xkw.com/dksih/QBM/2017/5/6/1681346041446400/1681863787331584/STEM/5dd8defea03e4dd69269916d223ca162.png?resizew=32)
![](https://img.xkw.com/dksih/QBM/2017/5/6/1681346041446400/1681863787331584/STEM/8a5e15f7d3eb4151ba13ff312b8b3661.png?resizew=45)
![](https://img.xkw.com/dksih/QBM/2017/5/6/1681346041446400/1681863787331584/STEM/1e95ba1f00744834949c0fe5b9a7b681.png?resizew=45)
![](https://img.xkw.com/dksih/QBM/2017/5/6/1681346041446400/1681863787331584/STEM/24d25f94ee5a4414910f131795032db9.png?resizew=39)
![](https://img.xkw.com/dksih/QBM/2017/5/6/1681346041446400/1681863787331584/STEM/25d7fcdc7860487ebfa5190cec3f53ac.png?resizew=21)
![](https://img.xkw.com/dksih/QBM/2017/5/6/1681346041446400/1681863787331584/STEM/e1fb612d343745629312f21455777faa.png?resizew=29)
![](https://img.xkw.com/dksih/QBM/2017/5/6/1681346041446400/1681863787331584/STEM/24d25f94ee5a4414910f131795032db9.png?resizew=39)
![](https://img.xkw.com/dksih/QBM/2017/5/6/1681346041446400/1681863787331584/STEM/2e6f3ce053d94338ac3a1087ebdebf2f.png?resizew=16)
![](https://img.xkw.com/dksih/QBM/2017/5/6/1681346041446400/1681863787331584/STEM/5c7dcadce0524bfcba9e3469f1ed2d22.png?resizew=160)
(1)求动点
![](https://img.xkw.com/dksih/QBM/2017/5/6/1681346041446400/1681863787331584/STEM/2e161489015f4341b11b903bc19776fd.png?resizew=16)
![](https://img.xkw.com/dksih/QBM/2017/5/6/1681346041446400/1681863787331584/STEM/929f1cf1b9444d76897b27ef61392e99.png?resizew=16)
(2)过动点
![](https://img.xkw.com/dksih/QBM/2017/5/6/1681346041446400/1681863787331584/STEM/25d7fcdc7860487ebfa5190cec3f53ac.png?resizew=21)
![](https://img.xkw.com/dksih/QBM/2017/5/6/1681346041446400/1681863787331584/STEM/929f1cf1b9444d76897b27ef61392e99.png?resizew=16)
![](https://img.xkw.com/dksih/QBM/2017/5/6/1681346041446400/1681863787331584/STEM/656513f66f24446a80c4e5c369a7d49f.png?resizew=16)
![](https://img.xkw.com/dksih/QBM/2017/5/6/1681346041446400/1681863787331584/STEM/f565d7f8551d4fbdb225fb43209616e3.png?resizew=16)
![](https://img.xkw.com/dksih/QBM/2017/5/6/1681346041446400/1681863787331584/STEM/85af66ab5ec84b37ba9685fd6475cf18.png?resizew=51)
您最近一年使用:0次
6 . 已知抛物线
的焦点为
,准线为
,过准线
与
轴的交点
且斜率为
的直线
交抛物线于不同的两点
.
(1)若
,求线段
的中点
到准线的距离;
(2)
上是否存在一点
,满足
?若存在,求出直线
的斜率;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f4fb72e39d79b7a0cd892fa5fa34bb7.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/0f85fca60a11e1af2bf50138d0e3fe62.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/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/519bbda6d723ecda4839a2d4c132e357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee9b6d061376a44355ac82e059779185.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
解题方法
7 . 在直角坐标系
中,设动点
到定点
的距离与到定直线
的距离相等,记
的轨迹为
,又直线
的一个方向向量
且过点
,
与
交于
两点,求
的长.
![](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/b2ba2238d6afe0187534155dd9ac48c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4180dae966f648d368a10edf3b7e3c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fa295c0f1ff29fb010a51947ecdc837.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53a948d2f7732d7f03e986c63712089b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b68df477b3ee45ac0f725db00d465a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaff41080fdea43eea7efedf9ebc1498.png)
您最近一年使用:0次
12-13高二上·海南·期末
8 . 如图,倾斜角为
的直线经过抛物线
的焦点,且与抛物线交于A、B两点,Q为A、B中点,
![](https://img.xkw.com/dksih/QBM/2012/2/21/1570759455793152/1570759461314560/STEM/015578310d90466c88f42fc1e127f984.png?resizew=234)
(1)求抛物线的焦点坐标及准线l方程;
(2)若
,作线段AB的垂直平分线
交
轴于点P,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
![](https://img.xkw.com/dksih/QBM/2012/2/21/1570759455793152/1570759461314560/STEM/015578310d90466c88f42fc1e127f984.png?resizew=234)
(1)求抛物线的焦点坐标及准线l方程;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69e222c14e46e2fcbb8285eeb18e5ba7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6598eb226fbe3e4af8fdcbb9ab902de7.png)
您最近一年使用:0次
9 . 已知点
,点
在
轴上,动点
满足
,且
与
轴交于
点,
是线段
的中点.
(1)求动点
的轨迹
的方程;
(2)点
是直线
上任意一点,过点
作
的两条切线,切点分别为
,
,取线段
的中点
,连接
交曲线
于点
.求证:直线
过定点,并求出定点的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecfa0014b6268b3ee0bb6ac68ba789ab.png)
![](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/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17c2b60c253d409a468787f9e31dda3d.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/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb26d84907c923278ac4626a9d58947.png)
(1)求动点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d047b1683b339b66921db610468af949.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a424b50eaeafa6f302ffd95476cb86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
您最近一年使用:0次
10 . 已知抛物线
:
(
)上的一点
的横坐标为3,焦点为
,且
.直线
:
与抛物线
交于
,
两点.
(1)求抛物线
的方程;
(2)若
是
轴上一点,且
的面积等于9,求点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fc58c62444bf42a25289c45425a00f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5abd313d4e92a762fb7fb0c1cb65263d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eebd95316310e6f9dc02f10a60cbc34c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c30fd97fafb3779aa4f4660f41e2939.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)
(1)求抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若
![](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/2205cffebf8c4d5f81d15ed7b85c8936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
您最近一年使用:0次
2016-12-04更新
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486次组卷
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3卷引用:2015-2016学年西藏日喀则一中高二4月月考理科数学试卷