名校
1 . 设
,若
,则
的取值范围为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5ab4b75fa22deba7fcbcdcb31dd45b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/271908eb10459506cbaa3e054ad39be4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0724083220fed03c97336756d5cdc58.png)
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解题方法
2 . 以点
为圆心作圆,过点
作圆
的切线,切线长为
,直线
(其中
为坐标原点)交圆
于
两点,当点
在优弧
上运动时,
的最大值为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3902ec8b7c448598f3d80e3a0bb05a70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdc8057b074ab72aac23e47bd957c2f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.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/45ff7e0ef1f622120cc1b18e9d3e80ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/064a2cbe2246b97e210f5eb1711aec70.png)
您最近一年使用:0次