已知
,
,
是正数,且满足
,求证:
(1)
;
(2)
.
![](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/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a57e060f61f7efa54982bda67db483a.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b68545ec0dfa32876a04f28440883f7.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/419c88dbb77fed47148de878336d571c.png)
20-21高三下·全国·阶段练习 查看更多[3]
更新时间:2021-03-22 14:22:52
|
【知识点】 由基本不等式证明不等关系解读
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解答题-证明题
|
适中
(0.65)
解题方法
【推荐1】(1)已知
,比较
与
的大小,试将其推广至一般性结论并证明;
(2)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7484d9b1e33ed553e44955bf41730c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62d2278151be65f6aea061e897c39975.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68c6c44cc2b5c4dc6d062db0e45c9eb4.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41029967073b4987a23e89b379f23758.png)
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