1 . 已知在平面直角坐标系xOy中,
,动点P满足![](https://staticzujuan.xkw.com/quesimg/Upload/formula/420d464c96149bd9cb5c7b1b3548133c.png)
则P点的轨迹Γ为圆_______ ,过点A的直线交圆Γ于两点C,D,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa7b02a080e9c7d2b9d2c621bcde2d67.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c2ba05abdc8179e5ff980fb2d15ce2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/420d464c96149bd9cb5c7b1b3548133c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c915b4ce31fabfd4703c547291ad9277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5a3363fbd9527e8aef45af8b302d01d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa7b02a080e9c7d2b9d2c621bcde2d67.png)
您最近一年使用:0次
解题方法
2 . 已知直线
与圆
交于A,B两点,O为坐标原点,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88bee8e70f1fab639be1636c7bce0477.png)
______ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71e5e815fc2bbf03d424b52fa920dd0e.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e6e15daf7b14dbff32c390f4984dcfb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3deda4ea7afad98f7e3ba32f6abba6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88bee8e70f1fab639be1636c7bce0477.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71e5e815fc2bbf03d424b52fa920dd0e.png)
您最近一年使用:0次
名校
3 . 已知直线l同时与圆
和圆
相切,请写出两条直线l的方程 _____ 和 _____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58824f9f1ec40ade500d17a72231c8f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ce807a9076837a8069e0a66a8c7fadf.png)
您最近一年使用:0次
解题方法
4 . 过圆
外一点
作圆
的两条切线,切点为
,则
的最小值为_______________ ,此时,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eec03bed5c6a80c31b54acb23930ebdf.png)
________________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/287bf04c01636b32de0d73a100dce704.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.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/ab79339b23db0c52bda36194abe1a8d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eec03bed5c6a80c31b54acb23930ebdf.png)
您最近一年使用:0次
5 . 已知抛物线
的焦点为
,点
为
上一点且在第一象限,以
为圆心,
为半径的圆交
的准线于
两点.若
,则圆
的方程为__________ ;若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bb4dd4670828f75bc573b52cdd02e1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82aaa597a5aa6176863eda3fdf83e181.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5c2293f93791a597bf0162411f3395f.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/fac3649308b528fd56545ba102dc42d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cbb05b8b630052ff544249ebd72d95d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
您最近一年使用:0次
6 . 设
是面积为1的等腰直角三角形,D是斜边AB的中点,点P在
所在的平面内,记
与
的面积分别为
,
,且
.当
,且
时,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f05c938fd42f5cb0b9d21cd44acbec6e.png)
________ ;记
,则实数a的取值范围为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/177678001b2ccde1db8f57fa5e017002.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08fa5b7ee3c02add5668fcdfd13e4b6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/779f538be94aff22b3eedabfc4c11be4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8e81f85f2c7f054f32a01e17f4aa8fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51336413ab117b448511bdcd4758e39d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f05c938fd42f5cb0b9d21cd44acbec6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/169436bf1e8baa899a0179a1c0409947.png)
您最近一年使用:0次
名校
7 . 圆
与
的位置关系为______ ;与圆
,
都内切的动圆圆心的轨迹方程为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f137a4a18b73e7286db82588ba2fd975.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5093d0fbea77573dd366f6a8361bbc2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
您最近一年使用:0次
2024-02-06更新
|
718次组卷
|
5卷引用:河南省信阳市固始县2023-2024学年高二上学期期末考试数学试卷
解题方法
8 . 已知圆
,则圆
的半径为________ ;与圆
和圆
都相切的直线的方程为___________ .(只需写出一条直线的方程)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e51ee7fd129ed982014b7611edf6340.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f240cccaf24af8a796abb95cb42be52e.png)
您最近一年使用:0次
9 . 已知圆
:
与圆
:
相交于点A、B.①若
,则公共弦所在直线方程为_________ ;②若弦长
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f919bd3dde10dbbc076f7ec5149699.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76350eb70a02eabffe0bdb1813569c64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c4f6f74444b2b7947fc6e35c8d62322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e318cefab1d71238b6a770e9d5fe154e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae5a64bcb77f5f64e4af6930c249a270.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
您最近一年使用:0次
10 . 已知圆
,则圆心坐标为_________ ;半径为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec6a116d87b056ee812b9621628a5a7c.png)
您最近一年使用:0次