1 . 已知直线l:
和圆C:
,过直线l上一点P作圆C的一条切线,切点为A,则
的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb343cfed5f78a4a24f750415abef43e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b73c488227ec6f650db8e2d0994b765.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d063ec7f9dbeba72fabf4437f9400e07.png)
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2 . 如图,已知
,
分别是椭圆的左、右焦点,现以
为圆心作一个圆恰好经过椭圆的中心并且交椭圆于点
,
.若过点
的直线
是圆
的切线,则椭圆的离心率为_________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.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/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b67528f875a6d4bac8bbf784f7b66a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://img.xkw.com/dksih/QBM/2021/12/13/2871611344977920/2890239383207936/STEM/a6fb44a9-0aba-47e4-b92b-bc31fb1cb559.png?resizew=207)
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2022-01-08更新
|
709次组卷
|
5卷引用:天津市静海区第一中学2021-2022学年高二上学期12月学生学业能力调研数学试题
天津市静海区第一中学2021-2022学年高二上学期12月学生学业能力调研数学试题陕西省西安市阎良区2021-2022学年高二上学期期末理科数学试题(已下线)专题3.5 选修一+选修二第四章数列(中)-【满分计划】2021-2022学年高二数学阶段性复习测试卷(人教A版2019选择性必修第二册)(已下线)专题11 圆锥曲线的几何性质问题(练)--第一篇 热点、难点突破篇-《2022年高考数学二轮复习讲练测(浙江专用)》(已下线)专题12 圆锥曲线的几何性质问题(练)--第一篇 热点、难点突破篇-《2022年高考数学二轮复习讲练测(新高考·全国卷)》
3 . 已知圆
圆
是平面内一动点,过P作圆A、圆B的切线,切点分别为D,E,若
,则P到坐标原点距离的最小值为____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4448cd0178cdd761664e9297574bf0d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d3b0bc4d201f1ea4e2f20047d98a7e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a72a0c8ea8bec78a61094b7aec1efc78.png)
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4 . 已知圆
,
为坐标原点,动点
在圆
外,过
作圆
的切线,设切点为
.则满足条件
的点
的轨迹方程为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7a0753502ffbcf0c501ce3fed4e607b.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/c5db41a1f31d6baee7c69990811edb9f.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43e0cac807d10c3dc2f00f29d1687f7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
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5 . 已知圆
,点
在抛物线
上运动,过点
引直线
,
与圆
相切,切点分别为
、
,则
的取值范围为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/802ef14b3c81db618798064e610e38d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcb2c5e3b4d493fcf1bbe773ee4b5135.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.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/c5db41a1f31d6baee7c69990811edb9f.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/3f4dfec890cdfdda355e19463f3be813.png)
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2021-12-05更新
|
559次组卷
|
5卷引用:江苏省扬州市江都区2021-2022学年高二上学期期中数学试题
6 . 已知
为双曲线
:
上一点,
,
为双曲线
的左、右焦点,
,
分别为
的重心、内心.若
轴,则
内切圆的半径为______ .
![](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/3a44342c2ee26a279265225982499b71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e105760638b22b26ff8bec4354255e4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33d776753746914c2410a3946c357f35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39f30bb85b5ac23bef82a36baf05876d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33d776753746914c2410a3946c357f35.png)
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7 . 过点
作圆
的切线,切点为
,
,点
为圆
上任意一点,则三角形
面积的最大值为 _______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d483dd3a65702ed0cd7df766300d03b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d61985901c2bc698d72ac88f4e1eb65.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/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d61985901c2bc698d72ac88f4e1eb65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
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21-22高二·江苏·单元测试
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8 . 设P为直线3x+4y+3=0上的动点,过点P作圆C:x2+y2-2x-2y+1=0的两条切线,切点分别为A,B,则四边形PACB的面积的最小值为________ .
您最近一年使用:0次
2021-11-18更新
|
693次组卷
|
4卷引用:第2章 圆与方程(章末测试提高卷)-2021-2022学年高二数学同步单元测试定心卷(苏教版2019选择性必修第一册)
(已下线)第2章 圆与方程(章末测试提高卷)-2021-2022学年高二数学同步单元测试定心卷(苏教版2019选择性必修第一册)第一章 直线与圆 综合培优卷辽宁省葫芦岛市2023届高三第一次模拟考试数学试题天津市第二十中学2023-2024学年高三下学期第三次统练数学试卷
2021高三·全国·专题练习
9 . 设P为直线3x-4y+11=0上的动点,过点P作圆C:x2+y2-2x-2y+1=0的两条切线,切点分别为A,B,则四边形PACB面积的最小值为________ .
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10 . 已知点
是直线
上一动点,
,
是圆
的两条切线,
,
是切点,若四边形
的最小面积是3,则
的值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/522da9f3d147c7d51d045f007d5b3258.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/425209ad4b273bf3eee80441e06030c6.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/283b0cef5d644b8dceb910ce2c76f21c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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