名校
1 . 已知半径为1的圆经过点
,过点
向圆作切线,则切线长的最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f1e95fb519f59c46f40e4ab44660073.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/accf35598ee054f1bf8b6584641d6d85.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2024-01-31更新
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2卷引用:北京市平谷区2023-2024学年高二上学期期末教学质量监控数学试卷
2024高三·全国·专题练习
名校
解题方法
2 . 已知
为坐标原点,
为椭圆
的左、右焦点,
是椭圆上异于顶点的一点,点
是以
为底的等腰三角形
的内切圆圆心,过
作
,垂足为
,则椭圆的离心率为______ .设内切圆与
轴相切于点
,则
的面积为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20537b56f64f6b7a808402981257c96d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0739793f234f8e86adc6177801ae7295.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf8a7029669bf1774a24f3ef6273ca88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8c3e0f50ddb6819979cf96cce25248e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57da117f4143ccf0d6d8b26829197813.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e30467196dfcb2cc2f388fb9b2ab15e8.png)
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3 . 已知圆
,直线l过点
.
(1)若直线l的斜率为
,求直线l被圆C所截得的弦长;
(2)若直线l与圆C相切,求直线l的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca23a2a8cf7f1022133ee825c7e12ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2857f75cfb98c78e0d96dfd4d7d0240.png)
(1)若直线l的斜率为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274a9dc37509f01c2606fb3086a46f4f.png)
(2)若直线l与圆C相切,求直线l的方程.
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2024-01-30更新
|
274次组卷
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2卷引用:广东省广州市天河区2023-2024学年高二上学期期末数学试题
4 . 在平面直角坐标系
中,已知圆
,若圆
上存在点P,由点P向圆C引一条切线,切点为M,且满足
,则实数a的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5dac36040d1be181a70527b0875701f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70506184daab999669b48b26e6aa00f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb49d4cf219518e1f21375a14bfb38e8.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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7卷引用:广东省广州市天河区2023-2024学年高二上学期期末数学试题
5 . 已知圆
,点
是直线
上的动点,
是圆
的切线,
为切点,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b4ee22fbd02d14f7764a81694df5d88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3ce6e716f2a085b503b1ba7c8fc00cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab7aaa871ceb78e5b80b531a7cf4f1c9.png)
A.3 | B.![]() | C.5 | D.![]() |
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6 . 在平面直角坐标系
中,已知
是圆
上的一点,
是圆
上的两点,则
的最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c9e92d63900d8d7d40c75bef817b032.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab609a6574633ebabcff3e73fa862081.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf18c06ad70688af34ee6cb5b49555d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2024-01-29更新
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3卷引用:山东省东营市第一中学2023-2024学年高二下学期开学收心考试数学试题
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7 . 已知点
,
,动点M满足
,记动点M的轨迹为曲线C.
(1)求C的方程,并说明C是什么曲线;
(2)过点P作曲线C的两条切线,求这两条切线的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7d8cc13666ef5e288a3c98e2fc56aa9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63297c48d9a2dfecb249f101b571e0a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0febb56eeb716af5fb528788a1cbbfec.png)
(1)求C的方程,并说明C是什么曲线;
(2)过点P作曲线C的两条切线,求这两条切线的方程.
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2卷引用:安徽省部分学校2023-2024学年高二上学期期末检测数学试题
名校
解题方法
8 . 已知圆
过点
和
,且圆心
在直线
上.
(1)求圆
的标准方程;
(2)经过点
的直线
与圆
相切,求
的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5272ef0c7dc3d9574334fe68ecbaf7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be8fb59da24f78d282c87ed75d033dac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0985b973395bcd371cd1e26d3fcd1c36.png)
(1)求圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)经过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a9f1c6beba1c6584f0ffd6bfb812b15.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/0f85fca60a11e1af2bf50138d0e3fe62.png)
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5卷引用:河南省新乡市2023-2024学年高二上学期1月期末测试数学试题
解题方法
9 . 已知圆
与
轴正半轴的交点为
,从直线
上任一动点
向圆作切线,切点分别为
,
,过点
作直线
的垂线,垂足为
,则
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9ab11ba6b230c4309e1b899eb58daae.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/6f2b5091f94b26111017bb5d74000f0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.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/64fcec77177443519207ffc6afb988d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7e4fa04825ac7d071968056322d88be.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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10 . 过抛物线
的焦点
作圆
的两条切线,切点分别为
,
,若
为等边三角形,则
的值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3764ba3aa0a241787f4661026bb14053.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb8f39c669699aef9d2a48277f90adda.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/91a9bf6bda9363dbef5f6ff4bf6a5edf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
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2024-01-25更新
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2卷引用:四川省凉山州2023-2024学年高二上学期期末检测数学试卷