1 . 已知圆
,点
,过
作直线
交圆
于
,
两点,当
取得最大值时,直线
的方程为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bc12c55f2676aeb4f696f4a84e4d65b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1dab74e16403e8131f9f5b2a74f3a84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.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/30654ba32a8ac50a05dc7e34bba72dcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
A.![]() ![]() | B.![]() ![]() |
C.![]() | D.![]() |
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2 . 在平面直角坐标系
中,已知直线
的参数方程为
(
为参数,
为常数),以坐标原点
.为极点,
轴正半轴为极轴建立极坐标系,圆
的极坐标方程为:
.
(1)求直线
恒过的定点的坐标,以及圆
在平面直角坐标系下的标准方程;
(2)若直线
与圆
交于
两点,且
为等腰直角三角形,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d868831d36f3d0ab75e811d9008a8755.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e94f7437aedf6465f0412808c4fa4703.png)
(1)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若直线
![](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/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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2024-05-27更新
|
287次组卷
|
2卷引用:陕西省部分学校(菁师联盟)2024届高三下学期5月份高考适应性考试理科数学试题
3 . 已知圆
,点
为直线
上的一点,过
作圆
的切线,切点分别为
,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a24779a68188a91a720ed8698598199d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9450684ca4c5f6ee21f226f5f40abe2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.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/d35031ade086c0cb5adcd82aaef62462.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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名校
4 . 圆心为
,且与直线
相切的圆在x轴上的弦长为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fad20e2bc6576fc461419f8f138d26e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15fd0ef39b1061d76e79eaf71a5cf03f.png)
A.2 | B.4 | C.![]() | D.![]() |
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2024-05-08更新
|
606次组卷
|
4卷引用:陕西省西安市第一中学2023-2024学年高三下学期4月月考理科数学试题
陕西省西安市第一中学2023-2024学年高三下学期4月月考理科数学试题陕西省西安市第一中学2023-2024学年高三下学期4月月考文科数学试题湖北省名校教研联盟2023-2024学年高三下学期4月联考数学试题(新高考卷(已下线)宁夏回族自治区银川一中2024届高三下学期第四次模拟数学(文)试卷
名校
5 . 已知
,半径为2的圆
满足:圆心在直线
上,且到直线
的距离为
.若圆
上任意一点
都满足
,则实数
的值可能是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93578505c8bc2dc0cfe0d6b218880e42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7abeb57d8e728c8d9bd15e8902b70a80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77f5191798242b7b9b88a75e17e4425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49411799919a63c618ec248e7a19b767.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.1 | B.![]() | C.2 | D.![]() |
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6 . 已知点
是圆
上的动点,以
为圆心的圆经过点
,且与圆
相交于
两点.则点
到直线
的距离为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79382ba44ba669b5d43fdd5427adf16c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/451fc6e4248b63e70595f23842f06c93.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/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
A.![]() | B.![]() | C.![]() | D.不是定值 |
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2024-04-08更新
|
201次组卷
|
4卷引用:陕西省2024届高三下学期教学质量检测(二)文科数学试题
7 . 解答下列问题.
(1)已知直线
与直线
相交,交点坐标为
,求
的值;
(2)已知直线
过点
,且点
到直线
的距离为
,求直线
的方程.
(1)已知直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0db319ec7c40b411ca9c176090eb3903.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee0d8cf38f9e3172d9f60b225bb722be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25f114df5ceabdb7e5fd3fdad4eaf056.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
(2)已知直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2b337c32bd5408c0ed8a9ee9cde4cad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/543d7c6ecbd812e056af069868e97c5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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8 . 在平面直角坐标系
中,圆C的参数方程为
(
为参数),以O为极点,x轴的正轴为极轴建立极坐标系,直线l的极坐标方程为
.
(1)若l过C的圆心,求实数m的值;
(2)当
时,求C上的点到l距离的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f6dd02bd11ca893f2f54bb9ba69999d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3648bbc0bb03eb33a7f0f0e87afd730a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e957ac807ed4b0fb72eb6a17771eb4e.png)
(1)若l过C的圆心,求实数m的值;
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c7a1d739890a8951586e23b78b035bc.png)
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9 . 若,
,则
的最小值为( )
A.![]() | B.6 | C.8 | D.12 |
您最近一年使用:0次
2024-03-29更新
|
594次组卷
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2卷引用:陕西省西安市未央区、莲湖区等区2024届高三下学期二模模拟检测文科数学试卷
解题方法
10 . 已知椭圆
的上顶点为
,点M到直线
的距离为
.
(1)求C的标准方程;
(2)直线
与C相交于A,B两点,若以线段
为直径的圆恰好经过坐标原点O,求k的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/851a5d6ec23256f9b4a9e98aa92945fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b25e326fdf9e5456f48e8a99a069f379.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b4be35b31c0278b445e613db72f3cfb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
(1)求C的标准方程;
(2)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da9db6ebe391887fccaf3916e9f57cab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
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