1 . 已知正数
满足
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/663a61ad241d5d874c9a9362f0ee917c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5be97cd1c7111b654d87d8fbb63b6a84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7f667572aa90b314716d93d77b64bfb.png)
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2 . 若对任意的
,不等式
恒成立,则实数
的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cd0f1e3e3b41948f1b3d287c4b0cb44.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e17c1d27421199b5a09c24e95b160a12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2011高三·湖北·竞赛
3 . 对一切满足
的实数
、
,不等式
恒成立.则实数
的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4edf2e906d4bbfdb6d02e13597236ac8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be073f77137d537c1d1926d2e42d2ace.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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4 . 函数
的值域为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca3536bb24f22a16b5bb93409eef3cd6.png)
您最近一年使用:0次