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1 . 若直线
与曲线
有且只有一个公共点,则实数
的取值范围是________________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84a4a7f7496bf126a583563799a43f4c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9f15f962ac94700d5a589bb1ba90930.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
您最近一年使用:0次
2017-10-09更新
|
834次组卷
|
5卷引用:湖北省长阳县第一高级中学2017-2018学年高二9月月考数学(理)试题
名校
2 . 从圆
外一点
向这个圆作切线,切点为
,则切线段![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c84a09595eabd6ae21a2e8faa7465c.png)
___ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ccdaeee0b57a30d81df9cf2bc7825f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f9a3ea5e76e165faeabfdbc9717c287.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c84a09595eabd6ae21a2e8faa7465c.png)
您最近一年使用:0次