已知函数
.若存在实数
,
,使得
的解集恰为
,则
的取值范围是_____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3dcfd03c005a1d38ee09ec4ddeab0671.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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2014·江苏徐州·三模 查看更多[2]
更新时间:2016-12-03 00:04:28
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