名校
1 . 若方程
表示圆,则实数
的取值范围是_______________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c1c9bb2eb0cbfe04eefba483db24834.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
2016-12-03更新
|
520次组卷
|
3卷引用:2014-2015学年浙江省永嘉县楠江中学高二上学期第二次月考数学试卷
解题方法
2 . 已知圆
,定直线
经过点
,若对任意的实数
,定直线
被圆
截得的弦长始终为定值
,求得此定值
等于____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dd1a9ae91ce1910d58a6f87dc88c1ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8748dc55e2f45bc37fc4d84d7310f79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
您最近一年使用:0次