名校
1 . 已知圆C:
,设
为直线
上一点,若C上存在一点
,使得
,则实数
的值不可能的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5a16429b7f6d4995163eddd65978ab0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7775aa57ca0e62216f3039ed88dceed0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c6d2269875c74ebc793c8e4328c77f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2968d7efca6cd0e3d13bd19a529fb74a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b752f0f189e5d8666daea73e145dff.png)
A.![]() | B.0 | C.2 | D.4 |
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2022-02-04更新
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3卷引用:浙江省绍兴市2021-2022学年高三上学期期末数学试题
2 . 如图,一个湖的边界是圆心为
的圆,湖的一侧有一条直线型公路
,湖上有桥
(
是圆
的直径).规划在公路
上选两个点
、
,并修建两段直线型道路
、
.规划要求,线段
、
上的所有点到点
的距离均不小于圆
的半径.已知点
到直线
的距离分别为
和
(
为垂足),测得
,
,
(单位:百米).
与桥
垂直,求道路
的长;
(2)在规划要求下,点
能否选在
处?并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bf25e032b5599ac49383de06e776365.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bf25e032b5599ac49383de06e776365.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.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/39acab3cfb59bfc9591371721ab01d93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc34db5860990e51ba31edc8cdd077c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1682d306c38087d9e6f7efb9cec596a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18444ec3e5e3b8a0cf488732c34866d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
(2)在规划要求下,点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
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3 . 已知圆C的圆心在y轴上,且与直线
切于点
,则圆C的圆心坐标为___________ ,半径r=___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/219610be97166092b01b0ae2860ba805.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c81cc8e58ad6e4bea486b448458e5b5.png)
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4 . 已知圆
与圆
,则圆心距![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4819e538d696e26adcbadb2ee55925b1.png)
___________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70feca8eac775ebee7b6d9760e2be6f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1982156cbeb1688dd77f2f2b749f3c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4819e538d696e26adcbadb2ee55925b1.png)
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解题方法
5 . 我们知道,函数
的图象关于坐标原点成中心对称图形的充要条件是函数
为奇函数,有同学发现了更一般结论:函数
的图象关于点
成中心对称图形的充要条件是函数
为奇函数,试根据此结论解答下列问题:
(1)若函数
满足对任意的实数m,n,恒有
,求
的值,并判断此函数图象是否中心对称图形?若是,请求出对称中心坐标;
(2)若(1)中的函数还满足
时,
,求不等式
的解集;
(3)若函数
,
满足(1)、(2),若
与
的图象有3个不同的交点
,
,
其中
,且
,求
值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bec550c01b4f075f22ab67f5e55ed5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05d0969cb7acbeaa05a101a385348a00.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1938c093dd2fbcb752d0eb7a18d143b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/981f123a0f0705b7b2639746bef859cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74ca54fecb4bfd6ca76b1144f8d369eb.png)
(2)若(1)中的函数还满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b140e221ddf537b8964fff8557cca0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3c7c58f9bb56a45617bd56c7f94a2ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4d0a7bb1d28421d59d52a6a7ff45176.png)
(3)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/049fe982530022b64c5682b6d66645dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b3723e49a7f226a5fb515564fca70ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a813b5adbf5c7082561237894ba6d599.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.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/4c16dac1e9bf5804c8907cbc59014d04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1310a7a80d1f8751a3f8cafe7f8c8b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cef62024f270fc34e497914e3e85241.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1eeb798e15ef4ea311e1d3523e7fc7a5.png)
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2022-01-21更新
|
402次组卷
|
2卷引用:浙江省杭州市八县区2021-2022学年高二上学期期末学业水平测试数学试题
名校
解题方法
6 . 莱昂哈德·欧拉(Leonhard Euler,瑞士数学家),1765年在他的著作《三角形的几何学》中首次提出定理:三角形的重心(三条中线的交点)、垂心(三条高线的交点)和外心(三条中垂线的交点)共线.这条线被后人称为三角形的欧拉线.已知
的顶点
,
,
.
(1)求
的欧拉线方程;
(2)记
的外接圆的圆心为C,直线l:
与圆C交于A,B两点,且
,求
的面积最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0023c9e8e0fec24d3aa77d09b2e4e62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2a29ba49963134a7232fa8574105fc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a0ca775a13198676337ea21610cdb03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42bcb9cd6f5f6dda25e46aeee92ea292.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0023c9e8e0fec24d3aa77d09b2e4e62.png)
(2)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0023c9e8e0fec24d3aa77d09b2e4e62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/566799521f49cd8620b933dc3cb9d790.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bccef8ed8c9233cf5b532edca6103503.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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2022-01-21更新
|
695次组卷
|
3卷引用:浙江省杭州市八县区2021-2022学年高二上学期期末学业水平测试数学试题
7 . 已知正实数x,y满足
,则
的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ceec4b56e0743426ce72c3fc50c0333.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6bdf5ce9058860077a95b39e0be7e30.png)
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2022-01-21更新
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3卷引用:浙江省衢州市2021-2022学年高一上学期期末教学质量检测数学试题
2021·全国·模拟预测
名校
8 . 矿山爆破时,在爆破点处炸开的矿石的运动轨迹可看作是不同的抛物线,根据地质、炸药等因素可以算出这些抛物线的范围,这个范围的边界可以看作一条抛物线,叫“安全抛物线”,如图所示.已知某次矿山爆破时的安全抛物线
的焦点为
,则这次爆破时,矿石落点的最远处到点
的距离为( )
![](https://img.xkw.com/dksih/QBM/2021/12/30/2883680640958464/2883904719314944/STEM/0c0144964a7242b48b364b9c9def035d.png?resizew=199)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b0bb736827148a6e6ba69387700041.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c8b8967256a04ec7ab5e1f30f6814b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://img.xkw.com/dksih/QBM/2021/12/30/2883680640958464/2883904719314944/STEM/0c0144964a7242b48b364b9c9def035d.png?resizew=199)
A.![]() | B.2 | C.![]() | D.![]() |
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名校
解题方法
9 . 已知
的三个顶点分别是
,
,
,下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ca979687ffb2214e747525635a6912c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d49a31f8e8dba418bd5d886998ef8d17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be2f117dc9adcb8fa7acf25bd2cbf283.png)
A.边![]() ![]() | B.边![]() ![]() |
C.![]() | D.![]() |
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2021-11-18更新
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4卷引用:浙江省杭州第四中学吴山校区2021-2022学年高二上学期期末数学试题
10 . 已知点
,
,直线
,
(1)求直线
和
交点的坐标;
(2)若点P在直线
上,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fadc9a19de13ca7688ca93f0c70a8a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3326927e4b01e981a19109633141e06a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ae1fa1c1e342fc48868d130b0cdb3bd.png)
(1)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
(2)若点P在直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c974c20de0e31685d64e26522969e2f.png)
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2021-06-11更新
|
812次组卷
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6卷引用:【新东方】在线数学162高二上
(已下线)【新东方】在线数学162高二上(已下线)专题07 直线的交点坐标与距离公式 - 2021-2022高二上学期数学新教材配套提升训练(人教A版2019选择性必修第一册)(已下线)第11讲 两点间的距离公式-【帮课堂】第1章 直线与方程(培优卷)2.3.2 两点间的距离公式练习(已下线)第07讲 直线的交点坐标与距离公式(6大考点12种解题方法)-2022-2023学年高二数学考试满分全攻略(人教A版2019选择性必修第一册)