解题方法
1 . 已知动圆与直线
相切,且过点
,设动圆圆心P的轨迹为C .
(Ⅰ)求C的方程;
(Ⅱ)若直线l与曲线C 相交于A,B 两点,且O为坐标原点,OAOB,求证:直线l恒过定点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99c6875d552e9fff3c7d655f3a59b166.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/055a2ef09e2ee0948cf67c58de58732d.png)
(Ⅰ)求C的方程;
(Ⅱ)若直线l与曲线C 相交于A,B 两点,且O为坐标原点,OAOB,求证:直线l恒过定点.
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解题方法
2 . 已知点
是抛物线
的焦点,点
在
上,且
.
(1)求
的方程;
(2)过点
作两条互相垂直的直线
交
于
两点,
交
于
两点.求证:
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82ea1be9b9b6bb12afa7e1ce703d1603.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/105fc189cd8499892183c046897282a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8c9aa5dc8e688868ad3eac88714cd51.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/254d90ef7eba319615e1fd6e01f6abd9.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/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0556ce16fbbb02a803ea0ab2546ef706.png)
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2024-01-22更新
|
120次组卷
|
3卷引用:青海省西宁市大通县2023-2024学年高二上学期期末考试数学试题
3 . 已知动点![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8701e0cce437edc830438b4fe6277d89.png)
到定点
的距离比它到
轴的距离大
.
(1)求动点
的轨迹
的方程;
(2)设点
(
为常数),过点
作斜率分别为
的两条直线
与
,
交曲线
于
两点,
交曲线
于
两点,点
分别是线段
的中点,若
,求证:直线
过定点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8701e0cce437edc830438b4fe6277d89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ddbdba8daedce3277d6584b6598aeef5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53a948d2f7732d7f03e986c63712089b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
(1)求动点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61608b9b3eee2858eb6cc0f66afa3dd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90963760acac7bfad3ae03088c6c80b0.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39acab3cfb59bfc9591371721ab01d93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5c4cd264c97c1f261229925cc5a6761.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ae3ab048431fdc75f9a2eef2a762f37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
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2024高三·全国·专题练习
解题方法
4 . 已知M(4,m)是抛物线C:y2=2px(p>0)上一点,且M到C的焦点的距离为5.
(2)如图,过点P(1,0)的直线l与C交于A,B两点,与y轴交于点Q,设
,
,求证:λ+μ是定值.
(2)如图,过点P(1,0)的直线l与C交于A,B两点,与y轴交于点Q,设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1ab46f02fa142503d34743833f5dd90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d614ec55b04682aba33bf14e1d9b6d5.png)
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名校
解题方法
5 . 在平面直角坐标系
中,动圆
过点
且与直线
相切.记圆心
的轨迹为曲线![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)求曲线
的方程;
(2)过点
的直线
与曲线
交于
两点,
.证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0be8172856a4123ccf9c9e35b89f917.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a844e14cdc075e436a7ad919431b4c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d1bed885fcb17bdcc978ed955677f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(1)求曲线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9758afe1afeb5b147510dab73c028b3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ad2d1c29d1033feb000af5cc4343e7f.png)
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名校
解题方法
6 . 动点P到定点F(0,1)的距离比它到直线
的距离小1,设动点P的轨迹为曲线C,过点F的直线交曲线C于A、B两个不同的点,过点A、B分别作曲线C的切线,且二者相交于点M.
(1)求曲线C的方程;
(2)求证:
;
(3)求△ ABM的面积的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1d0aa9412dd7caf42cc71520e282328.png)
(1)求曲线C的方程;
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/293c86ee9157aed6ea7e418de34f0e9d.png)
(3)求△ ABM的面积的最小值.
您最近一年使用:0次
2018-01-12更新
|
1208次组卷
|
7卷引用:湖北省襄阳市2018届高三1月调研统一测试数学(文)试题
湖北省襄阳市2018届高三1月调研统一测试数学(文)试题(已下线)《2018届优生-百日闯关系列》数学专题三 第三关 以解析几何中与抛物线相关的综合问题湖北省襄阳市2018届高三1月调研统一测试数学(理)试题湖北省黄冈中学2022届高三下学期二模数学试题湖北省黄冈市重点中学2022届高三下学期5月二模数学试题四川省宜宾市叙州区第二中学校2024届高三上学期期末数学(理)试题四川省宜宾市叙州区第二中学校2024届高三上学期期末数学(文)试题
7 . 已知抛物线
:
及抛物线
:
(
),过
的焦点F的直线与
交于
,
两点,与
交于
,
两点,O为坐标原点,
.
(1)求
的方程.
(2)过
的中点M作
的准线的垂线,垂足为N.
(ⅰ)证明:
为定值;
(ⅱ)判断直线
与
的公共点个数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.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/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3b9e816b14051f785aa5aae72b8eed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43a71fc9c0068109dad1382354570665.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7fd372b6c8b652570d9307d98c6b4e1.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(2)过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc34876d748f30fa4fc2eb6a686b5ff5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
(ⅰ)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27a7397aff70bff06b1dc694cf67482e.png)
(ⅱ)判断直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b06b75fb4e379ff3b99e68f40136cad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
您最近一年使用:0次
8 . 如图,已知A,B,C,D是抛物线
上四个不同的点,且
,设直线
与直线
相交于点P,设
.
![](https://img.xkw.com/dksih/QBM/2021/2/22/2663329410916352/2665039524462592/STEM/28393bca-435b-41c1-b430-57292518cc22.png?resizew=314)
(1)求证:A,P,B三点的横坐标成等差数列;
(2)当直线
经过点
,且
时,若
面积的为
,求直线
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7704b7570bc87625999309fb5e698439.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f79863ffcfa63117ca6741b20a48e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f7afb6ced0907e420874d108965749d.png)
![](https://img.xkw.com/dksih/QBM/2021/2/22/2663329410916352/2665039524462592/STEM/28393bca-435b-41c1-b430-57292518cc22.png?resizew=314)
(1)求证:A,P,B三点的横坐标成等差数列;
(2)当直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e241c20dbb4f324b6491da9f75222c9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f2f2d7c81cb44416bcdf59419637682.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3d754c4ad51e4482e12a615d20a13fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
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解题方法
9 . 已知
,
是曲线
上任意一点,动点
满足
.
(1)求点
的轨迹
的方程;
(2)过点
的直线交
于
,
两点,过原点
与点
的直线交直线
于点
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6cffa52177f31cd10c42d00f69d4da1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56c5e13757b70fe6a307166ef7a3e32c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0ff2ac5a9e81e3d892316a179bdb013.png)
(1)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5fcce10d4243fb2a8351db179c2c48.png)
![](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/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eefa44964db83759aff6fc8dd7ef8f28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afda104df06f7f5d8e805b345739a7a3.png)
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2019-06-07更新
|
857次组卷
|
2卷引用:【市级联考】2019年福建省莆田市高考二模数学试题(文科)
解题方法
10 . 已知动点P与点
的距离比它到直线
的距离小1.
(1)求动点P的轨迹C的方程;
(2)设P为直线
上任一点,过点P作曲线C的切线
,
,切点分别为A,B,直线
,
与y轴分别交于M,N两点,点
、
的纵坐标分别为m,n,求证:m与n的乘积为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/092fd1b1d33979818300cd2e3699bff7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57a520beb0ae215a01f9de68d10d44d3.png)
(1)求动点P的轨迹C的方程;
(2)设P为直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99c6875d552e9fff3c7d655f3a59b166.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
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