名校
1 . 已知函数
.
(1)解关于
的不等式
;
(2)记
的最小值为
,已知实数
,
都是正实数,且
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53e25d2e7171f37c4159bcc52649e14e.png)
(1)解关于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4b781b577380833bf91d2b2f1169c50.png)
(2)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffc83e2fb526f2cda2414e151c16df69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4521d5d9b29cfbfdb624d949439a4f70.png)
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2018-07-02更新
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310次组卷
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2卷引用:【全国百强校】宁夏石嘴山市第三中学2017-2018学年高二6月月考数学(文)试题