已知![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1f90420254bd21605b7f5f0460d2207.png)
(1)求不等式
的解集
(2)若对任意
,
恒成立,求实数a的取值范围
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1f90420254bd21605b7f5f0460d2207.png)
(1)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04005072a28f26bdfe69a6a2d2b4059d.png)
(2)若对任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24a57996290794e082b21d8f1dfc322a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64dca8d3a7d74aea2fe1221fcf360902.png)
更新时间:2019-10-21 21:15:13
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