1 . 如图所示,过原点O作两条互相垂直的线OA,OB分别交抛物线
于A,B两点,连接AB,交y轴于点P.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/25/e8f02597-2cc6-4180-9c64-2c490bc45fc3.png?resizew=158)
(1)求点P的坐标;
(2)证明:存在相异于点P的定点T,使得
恒成立,请求出点T的坐标,并求出
面积的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10f4123c19136d3a4dc040dce8e34e14.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/25/e8f02597-2cc6-4180-9c64-2c490bc45fc3.png?resizew=158)
(1)求点P的坐标;
(2)证明:存在相异于点P的定点T,使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a725613972cca1d387bbfb6d3426f1f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a04e30d5827f2120d997997e4e31ba17.png)
您最近一年使用:0次
2023-02-22更新
|
782次组卷
|
2卷引用:中学生标准学术能力诊断性测试2022-2023学年上学期12月测试(新课改版)数学试题
名校
解题方法
2 . 有一正方形景区
,
所在直线是一条公路,该景区的垃圾可送到位于
点的垃圾回收站或公路
上的流动垃圾回收车,于是,景区分为两个区域
和
,其中
中的垃圾送到流动垃圾回收车较近,
中的垃圾送到垃圾回收站较近,景区内
和
的分界线为曲线
,现如图所示建立平面直角坐标系,其中原点
为
的中点,点
的坐标为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/18/f2081f60-dda2-4d2b-bbf3-8173e9952f7c.png?resizew=150)
(1)求景区内的分界线
的方程;
(2)为了证明
与
的面积之差大于1,两位同学分别给出了如下思路,思路①:求分界线
在点
处的切线方程,借助于切线与坐标轴及景区边界所围成的封闭图形面积来证明;思路②:设直线
:
,分界线
恒在直线
的下方(可以接触),求
的最小值,借助于直线
与坐标轴及景区边界所围成的封闭图形面积来证明.请选择一个思路,证明上述结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611f100dcfa7803db6eb233e2e7f2dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/589786dd7c3a2679c3230b671cd232d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/589786dd7c3a2679c3230b671cd232d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53a948d2f7732d7f03e986c63712089b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/18/f2081f60-dda2-4d2b-bbf3-8173e9952f7c.png?resizew=150)
(1)求景区内的分界线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)为了证明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c88d9142df6ba8e43c1a93bd04a1362.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07565f10847840e0fb07b05218ad17fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c88d9142df6ba8e43c1a93bd04a1362.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c88d9142df6ba8e43c1a93bd04a1362.png)
您最近一年使用:0次
解题方法
3 . 已知点
到直线
的距离等于
,其中
.设平面内与点F和直线
距离相等的点的轨迹为C.
(1)求C的方程;
(2)设
与C在第一象限的交点为A,
与x轴的交点为B,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f6d06b9a4d3a891ea7c986b1ab4e925.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c7c90d155f309e54303f68d91a6b5d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18a4c25fa7b7754fc55548e2497a9d6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0bae54510610d3118cc785489001096.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adc3624ac3279fa0d23e45c6259f1864.png)
(1)求C的方程;
(2)设
![](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/004104bafb5f30338123d4ea2b7fedde.png)
您最近一年使用:0次
2022-12-26更新
|
386次组卷
|
2卷引用:四川省2022年普通高等学校高职教育单独招生文化考试(普高类)数学试题
22-23高三上·全国·阶段练习
4 . 已知抛物线
:
,直线
交抛物线
于
两点,
,
,且
.
(1)求坐标原点
到直线
的距离的取值范围;
(2)设直线
与
轴交于
点,过点
作与直线
垂直的直线
交椭圆
:
于
,
两点,求四边形
的面积的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/745de5ef1fd897d16e37464172d5e8c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.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/12a3efb79f35db8448f3391252ab7d4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8df332f01628130c084fd46aaca0a4b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65d335e66dec30244e3ee1c0d193335e.png)
(1)求坐标原点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
(2)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cae00bdc6f8b564b6b15b32572c848b.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/ae3e029070ad0d2ce680d5336ed7150a.png)
您最近一年使用:0次
2022·全国·模拟预测
名校
解题方法
5 . 已知点
,
,
,抛物线
.过点
的直线
与
交于
,
两点,直线
分别与
交于另一点
,则下列说法中正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0929421a6188c3122442866b0b85a5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f55d12701014cf53071093e8739d089b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8dbbb76c7a42b124d474b652abdbadde.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bb4dd4670828f75bc573b52cdd02e1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.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/5d6f5adf13b4214666292dd64b947741.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af405a054bfe7fb7ce40e48d816467e1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5671fb25040a712a49e8c8148d67d300.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
A.![]() |
B.直线![]() ![]() |
C.若![]() ![]() ![]() ![]() ![]() ![]() |
D.若![]() ![]() ![]() ![]() ![]() ![]() |
您最近一年使用:0次
2022-12-05更新
|
2282次组卷
|
6卷引用:2023年普通高等学校招生全国统一考试数学领航卷(七)
(已下线)2023年普通高等学校招生全国统一考试数学领航卷(七)江苏省苏州市2023届高三上学期12月高考模拟数学试题山东省2023届高考考向核心卷数学试题(已下线)模块六 平面解析几何-3河北省秦皇岛市青龙满族自治县实验中学2022-2023学年高二上学期期末数学试题新疆维吾尔自治区乌鲁木齐市第八十中学2024届高三上学期11月月考数学试题
6 . 抛物线的弦与弦的端点处的两条切线围成的三角形称为阿基米德三角形,该三角形以其深刻的背景、丰富的性质产生了无穷的魅力.设A,B是抛物线
上两个不同的点,以A,B为切点的切线交于P点.若弦AB过
,则下列说法正确的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/281fe4ed8f8278f6f047347bf3d5c324.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5421a28dc3675ae20190d6090793246e.png)
A.点P在直线![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2022高三·全国·专题练习
7 . 某人欲设计一个如图所示的“蝴蝶形图案(阴影区域)”,其中
是过抛物线焦点
且互相垂直的两条弦,该抛物线的对称轴为
,通径长为
.记
,
为锐角.(通径:经过抛物线焦点且垂直于对称轴的弦)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/12/27a2c56b-1868-4ffb-b176-0fe45e12fb3d.png?resizew=160)
(1)用
表示
的长;
(2)试建立“蝴蝶形图案”的面积
关于
的函数关系式,并设计
的大小,使“蝴蝶形图案”的面积最小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73b3c032441543354c154ee67d744abb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be5327879c0e56298c5430a5e466be4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/12/27a2c56b-1868-4ffb-b176-0fe45e12fb3d.png?resizew=160)
(1)用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
(2)试建立“蝴蝶形图案”的面积
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
您最近一年使用:0次
名校
8 . 如图,已知抛物线
的焦点为
,过直线
上一点
(点
不在
轴上)作抛物线的两条切线,切线分别交
轴于点
的中点为
,则下列正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/20/636a29cd-f558-4b77-a2cc-9f8c742c1138.png?resizew=295)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc7ad3432ac96b0a38beaa7f2edc3499.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e235d7dd12f948f5ffb2e5afddc95612.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.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/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79529ddfb08945e9b736f42088072159.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/20/636a29cd-f558-4b77-a2cc-9f8c742c1138.png?resizew=295)
A.当![]() ![]() ![]() |
B.当![]() ![]() |
C.![]() |
D.![]() ![]() |
您最近一年使用:0次
9 . 请在下面两题中选择一题作答:
题
设点
是抛物线
与双曲线
在第一象限的唯一公共点,点
,
分别是
的准线与
的两条渐近线的交点,则
的面积为__________ .
题
已知球的体积
和表面积
均是球半径
的函数,分别记为
,
若球
的半径
满足
,点
到球心
的距离为
,过点
作平面
,则平面
截球
所得截面圆的面积的最小值为__________ .
题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47a34029cc0f7665d32694f0837b2f7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19cf08f835978859030ed7aceabafc27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ceea7e3117a7041ebe102193d087430b.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/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
题
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/508f5b0a8b1ac58f88d886a850f3ae1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be54e84508decfcce6d2fcbe6c8c1a92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d524e6addf9435f64de5c45423b29b73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2816117b19e6c825c5131e136481c789.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5aeb128d36a0612d378b925c496df48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
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10 . 已知点
为抛物线
的焦点,直线
过点
交抛物线
于
,
两点,
.设
为坐标原点,
,直线
与
轴分别交于
两点,则以下选项正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bf92a1ba410263d4f68b7e0432b19aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de31b28cca69406158a9e597e240bea4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7045301d623f040ceb5ea0a8be3772bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83ae15116ec544e1cbb8e54fcb606e84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b772a2ddcb32c849d45b7acb692a5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82626244a1dd45dc8945995c2730b15b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/790ef3382b1c731f2885eecfd92c2a86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
A.![]() |
B.若![]() ![]() |
C.若![]() ![]() ![]() |
D.![]() |
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2022-06-11更新
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1409次组卷
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11卷引用:广东省深圳市光明区高级中学等2022届高三下学期名校联考数学试题
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