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解题方法
1 . (1)证明不等式:
;
(2)设a,b,c均为正数,且
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/593adf03f500259fc8e8f144a25d800a.png)
(2)设a,b,c均为正数,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/751e274e9107d780c39ba9c49d6daefb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5be94bcdd073e5e6c8137caa90e41b9a.png)
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2020-11-03更新
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295次组卷
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3卷引用:安徽省安庆市怀宁中学2020-2021学年高一上学期第一次质量检测数学试题
2 . 求证:(1)
;
(2)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/734ea1cbf13e4275c2c6dad646489a07.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7dff1dbddace4de507e7ff1fcc3e1b3.png)
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