1 . 在数轴上,运用两点间距离的定义和计算公式,解下列方程:
(1)
;
(2)
;
(3)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/608d3a02807f4b082c8231aac09b9611.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f259b6cd824df35af51467f803955ca.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/935361a261c350b900787e6bf3c582a4.png)
您最近一年使用:0次
2 . 已知点P和非零实数λ,若两条不同的直线
,
均过点P,且斜率之积为λ,则称直线
,
是一组“
共轭线对”,如直线
和
是一组“
共轭线对”,其中O是坐标原点.
(1)已知
,
是一组“
共轭线对”,且直线
,求直线
的方程;
(2)已知点
、点
和点
分别是三条倾斜角为锐角的直线PQ,QR,RP上的点(A,B,C与P,Q,R均不重合),且直线PR,PQ是“
共轭线对”,直线QP,QR是“
共轭线对”,直线RP,RQ是“
共轭线对”,求点P的坐标;
(3)已知点
,直线
,
是“
共轭线对”,当
的斜率变化时,求原点O到直线
,
的距离之积的取值范围.
![](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/280f1e7d3e287061e928c064f2197e11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4073d527d4b14759a7cbaeabfb35a756.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63b9f130d7a143d493185819846f8a95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5b0c1277c5cfe00b24d32ec4ec1630.png)
(1)已知
![](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/4c903f3bfb8ecbbf0cd87e20c928f732.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4073d527d4b14759a7cbaeabfb35a756.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
(2)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/383f12cb70ca55eba4ff012771dbfa9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d42f05b013e4b7166cbc87c5a83d6a85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca0b4afd16b79370532de44989d6c43d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2708fa6298e52f617383efc175b71ddc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53e20268889bf68598593b75d240e4da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2297f285164152b74ffa6d48f6b90941.png)
(3)已知点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc5297226ca91f493437e47ef18c495a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9fce9427c9b17e4d3cda0c3ff3e2e14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f2813ee8f26cca880b6427f5f545d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d3248ea67b1986b58386f7522d799de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9fce9427c9b17e4d3cda0c3ff3e2e14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9fce9427c9b17e4d3cda0c3ff3e2e14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f2813ee8f26cca880b6427f5f545d0.png)
您最近一年使用:0次
2021-12-02更新
|
323次组卷
|
2卷引用:人教B版(2019) 选修第一册 过关检测 第二章 第2.2节综合把关练
3 . 已知
三个顶点的坐标分别为
,
,
.求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f99ce0fdd3a34df8d5e913b7b9f6f3fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fc27522334072c7f41cc482c1c67e9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c83ebc472717d6ddeeeabeb6dff738a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
名校
解题方法
4 . (1)判断A(1,3)、B(5,7)、C(10,12)三点是否共线?并说明理由.
(2)一条直线经过点A(2,﹣3),并且它的倾斜角等于直线
的倾斜角的2倍,求这条直线的方程.
(2)一条直线经过点A(2,﹣3),并且它的倾斜角等于直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c28c650d073802c5740a487638d05699.png)
您最近一年使用:0次
21-22高二上·全国·单元测试
5 . 公元前3世纪,古希腊数学家阿波罗尼斯
在《平面轨迹》一书中,研究了众多的平面轨迹问题,其中有如下著名结果:平面内到两个定点
,
距离之比为
且
的点
的轨迹为圆,此圆称为阿波罗尼斯圆.
(1)已知两定点
,
,若动点
满足
,求点
的轨迹方程;
(2)已知
,
是圆
上任意一点,在平面上是否存在点
,使得
恒成立?若存在,求出点
坐标;若不存在,说明理由;
(3)已知
是圆
上任意一点,在平面内求出两个定点
,
,使得
恒成立.只需写出两个定点
,
的坐标,无需证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92de787da13253c951264741ad9ffd46.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/78b271bf0fef61c6e81deb8a0a22f70b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7701b6314d7f1735e4cb196361fdd76a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(1)已知两定点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81aac485ef3bfc95f34655fddcc14fd1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d552ee3c32a8976ff5767daaafac770c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b48bf7c429f70ad8772b654b0cff04e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58bf86bce1934cfa48f56fe375f43e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7f91a8ba271f4788ca0ccaec17acffa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b48bf7c429f70ad8772b654b0cff04e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
(3)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9acc273b740181af1b2c0ce76a3fc32.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/b48bf7c429f70ad8772b654b0cff04e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
您最近一年使用:0次
名校
解题方法
6 . 已知圆锥曲线
上的点
的坐标
满足
.
(1)说明
是什么图形,并写出其标准方程;
(2)若斜率为1的直线
与
交于
轴右侧不同的两点
,
,求直线
在
轴上的截距的取值范围.
![](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/82a79a33a83a7ba57a34b5093d1d1d02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd05490af0096bb615260e752b67cfb6.png)
(1)说明
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
(2)若斜率为1的直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.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/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
您最近一年使用:0次
2021-11-29更新
|
508次组卷
|
3卷引用:福建省龙岩第一中学2021-2022学年高二上学期模块考试(期中)数学试题
名校
解题方法
7 . 在平面直角坐标系中,已知
三个顶点的坐标分别为
,
,
.
(1)设
的中点为
,求
边上的中线
所在的直线方程;
(2)求
边上的高所在的直线方程;
(3)求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21f20953302d861e6c698575bfbab1c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92a290a27cce9bd59bb6d79822473d8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3bf9ea972ce120ffe654fc0f2606a33f.png)
(1)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
2021-11-29更新
|
333次组卷
|
3卷引用:北京市昌平区第二中学2021-2022学年高二上学期期中考试数学试题
名校
解题方法
8 . 已知直线
的方程为:
,分别交
轴,
轴于
两点,
(1)求原点到直线
距离的最大值及此时直线
的方程;
(2)若
为常数,直线
与线段
有一个公共点,求
的最小值
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bc924f15297207938b1ef7b1a81dd1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
(1)求原点到直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28e4f618dd9a18d0a2d71f5478b11d95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83ea412665e3af61cb99cc3cd4764e60.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f484115a9df1b6060d6b14df85c6f38.png)
您最近一年使用:0次
2021-11-28更新
|
362次组卷
|
2卷引用:浙江省杭州地区(含周边)重点中学2021-2022学年高二上学期期中联考数学试题
9 . 已知圆
.
(1)过点
,作圆
的两条切线,切点分别为
,
,求直线
的方程;
(2)若点
是圆
上的任意一点,
,是否存在定点
,使得
,若存在,求出点
的坐标;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6b4aa195ea6a6febc916142422abef2.png)
(1)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f1e95fb519f59c46f40e4ab44660073.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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fccf33cede6bc8c8794b48f5831c4e27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f596bd198be4e419073a1bcfd8a2b89d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
您最近一年使用:0次
名校
10 . 某海面上有O,A,B三个小岛(面积大小忽略不计),A岛在O岛的北偏东45°方向20
km处,B岛在O岛的正东方向10km处,以O为坐标原点,O的正东方向为x轴正方向,1km为单位长度,建立平面直角坐标系,如图所示
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/4273b662-bdc7-4f98-a59d-c9644862d929.png?resizew=228)
(1)试写出A,B的坐标,并求A,B两岛之间的距离;
(2)已知在经过O,A,B三个点的圆形区域内有未知暗礁,现有一艘船M在O岛的南偏西30°方向距O岛20km处,正沿北偏东45°方向行驶,若不改变方向,该船有没有触礁的危险?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e051d14fd6a787387995331f5e6d026.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/29/4273b662-bdc7-4f98-a59d-c9644862d929.png?resizew=228)
(1)试写出A,B的坐标,并求A,B两岛之间的距离;
(2)已知在经过O,A,B三个点的圆形区域内有未知暗礁,现有一艘船M在O岛的南偏西30°方向距O岛20km处,正沿北偏东45°方向行驶,若不改变方向,该船有没有触礁的危险?
您最近一年使用:0次