已知
且
若
恒成立,则实数m的取值范围是_________ .
![](https://img.xkw.com/dksih/QBM/2013/3/4/1571127896858624/1571127902167040/STEM/3d8ec066b6974b2f988e7facf286945f.png?resizew=81)
![](https://img.xkw.com/dksih/QBM/2013/3/4/1571127896858624/1571127902167040/STEM/ad88abe3d77b4924b261d138f5b4f038.png?resizew=69)
![](https://img.xkw.com/dksih/QBM/2013/3/4/1571127896858624/1571127902167040/STEM/f2274b9271264d23b05a4922e681699a.png?resizew=67)
2013·上海奉贤·一模 查看更多[2]
更新时间:2016-12-02 04:10:48
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【知识点】 基本不等式的恒成立问题解读