名校
1 . 已知点
,圆
.
(1)求圆
过点
的切线方程;
(2)
为圆
与
轴正半轴的交点,过点
作直线
与圆
交于两点
、
,设
、
的斜率分别为
、
,求证:
为定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4c21b59d92c33a3b451d6cc13878c45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7f25834d8218c53cb975c2a2fe7442a.png)
(1)求圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db8305c4ffbf876642440c3d28e91e9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce2790947716b1cfa9c5e7a65db4093.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b69e3f7ddd51215d00661c09cd900d60.png)
您最近一年使用:0次
2023-11-14更新
|
774次组卷
|
4卷引用:山东省淄博实验中学、齐盛高中、淄博六中2024届高三上学期第二次阶段性诊断检测数学试题
2 . 如图,已知圆
,动点
,过点P引圆的两条切线,切点分别为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/15/bb72d57d-73f0-4208-9cbf-fb5cf085b2d1.png?resizew=163)
(1)求证:直线
过定点;
(2)若两条切线
与
轴分别交于
两点,求
的面积的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bddf46e1b8395edb130c35e3e6316128.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3481a964d965c4a3d59e979320e7ee33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/15/bb72d57d-73f0-4208-9cbf-fb5cf085b2d1.png?resizew=163)
(1)求证:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
(2)若两条切线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/790ef3382b1c731f2885eecfd92c2a86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91b51d3992644d37dc71c9b5a97d515c.png)
您最近一年使用:0次
解题方法
3 . 已知
,函数
.
(1)若
,求
在点
处的切线方程;
(2)求证:
;
(3)若
为
的极值点,点
在圆
上.求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbe45993e6bd636a4f34886bb3d72f42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/788ebf70de03fb27efdb04252024b55a.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5828873f8369183faf71181cda5b61d2.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bd277b65fe7f9896b600a7950e57e47.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca84dff2367d3127e8ea7775981345b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/763f6c02b45500e5a42ce71f5e10ed96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
真题
4 . 设
,在平面直角坐标系中,已知向量
,向量
,
,动点
的轨迹为E.
(1)求轨迹E的方程,并说明该方程所表示曲线的形状;
(2)已知
,证明:存在圆心在原点的圆,使得该圆的任意一条切线与轨迹E恒有两个交点A,B,且
(O为坐标原点),并求出该圆的方程;
(3)已知
,设直线
与圆C:
(1<R<2)相切于A1,且
与轨迹E只有一个公共点B1,当R为何值时,|A1B1|取得最大值?并求最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4d1dbacb32c6aa64b346cfc40c5e7f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/069d5e4878e17bf1f2bd494d5f1c8447.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cc74c79951a73d068aa2229f7d415d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a32a090bc3ff8e2e53407c2ae4084cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45ff7e0ef1f622120cc1b18e9d3e80ec.png)
(1)求轨迹E的方程,并说明该方程所表示曲线的形状;
(2)已知
![](https://img.xkw.com/dksih/QBM/2010/3/12/1569631062581248/1569631152578560/STEM/ad66f3538bea4def8499012dccd571f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ada5c15d7b42b2fb2836c3478ae5fb34.png)
(3)已知
![](https://img.xkw.com/dksih/QBM/2010/3/12/1569631062581248/1569631152578560/STEM/ad66f3538bea4def8499012dccd571f5.png)
![](https://img.xkw.com/dksih/QBM/2010/3/12/1569631062581248/1569631152578560/STEM/eb968bca05eb47dcb4e86eb45f24c831.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d443779a9f5889e921a60e5b452a926f.png)
![](https://img.xkw.com/dksih/QBM/2010/3/12/1569631062581248/1569631152578560/STEM/eb968bca05eb47dcb4e86eb45f24c831.png)
您最近一年使用:0次
2019-01-30更新
|
2833次组卷
|
4卷引用:2009年普通高等学校招生全国统一考试文科数学(山东卷)
2009年普通高等学校招生全国统一考试文科数学(山东卷)(已下线)2012-2013学年四川省外语实验学校高二4月数学试卷高中数学解题兵法 第三十四讲 分类讨论是一种重要的解题策略(已下线)专题23 圆锥曲线中的最值、范围问题 微点1 圆锥曲线中的最值问题
名校
5 . 已知圆
满足:①圆心在第一象限,截
轴所得弦长为2;②被
轴分成两段圆弧,其弧长的比为
;③圆心到直线
的距离为
.
(Ⅰ)求圆
的方程;
(Ⅱ)若点
是直线
上的动点,过点
分别作圆
的两条切线,切点分别为
,
,求证:直线
过定点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4023bc2fbf5be9afb92f72def8368b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f52cb58b6bc5d71030463ba7e28134.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dee14db57f0c762aad845cf5b4a243c0.png)
(Ⅰ)求圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(Ⅱ)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e55aa0a20848c37c1892c567b2315e04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.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/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
您最近一年使用:0次
2017-08-14更新
|
1787次组卷
|
3卷引用:山东省淄博市2016-2017学年高一下学期期末考试数学试题
名校
解题方法
6 . 已知圆
过点
,
,且圆心
在直线
上,过点
的直线交圆
于
两点,过点
分别作圆
的切线,记为
.
(1)求圆
的方程;
(2)求证:直线
的交点都在同一条直线上,并求出这条直线的方程.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15ed90ebf0061c8a79beed307fc1719a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895b45ce9162e12904639417fa1bfbd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f7053364523e655abed4a0c887fae69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d347ce38af382b8667283eef0e38b167.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44434b647ec546fe787e2164e0be6cd2.png)
(1)求圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(2)求证:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44434b647ec546fe787e2164e0be6cd2.png)
您最近一年使用:0次
解题方法
7 . 已知椭圆
:
的离心率为
,以原点为圆心,以椭圆的短半轴长为半径的圆与直线
相切.
![](https://img.xkw.com/dksih/QBM/2016/6/22/1572773387493376/1572773393817600/STEM/5a2fbcd90c7e4e38a073dc6e9027e798.png?resizew=290)
(1)求椭圆
的方程;
(2)过椭圆的右焦点
的直线
与椭圆交于
,过
与
垂直的直线
与椭圆交于
,与
交于
,
①求证:直线
的斜率
成等差数列;
②是否存在常数
使得
成立,若存在,求出
的值,若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d38f9106cef0b638e62c90afc1c523cd.png)
![](https://img.xkw.com/dksih/QBM/2016/6/22/1572773387493376/1572773393817600/STEM/5a2fbcd90c7e4e38a073dc6e9027e798.png?resizew=290)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过椭圆的右焦点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.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/39acab3cfb59bfc9591371721ab01d93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d9db3f084214a629c43a9a7ee9cfe36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
①求证:直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfe8686b28e18331575ad8e1c70d6512.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41e34377c2a36ec58928c97fa575f588.png)
②是否存在常数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16d3b8ae9cc8aeb8008c91a69e13a2b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次