【选修4-5:不等式选讲】
已知
,且
,求证:
已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62e7b7cb9845c3d4df1711b4c6019503.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5cb8160f60ea06bf2cdef63accf3f74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/28ace032721d4f4afa0d79f6fdd1b4f7.png)
更新时间:2016-12-04 07:20:30
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【知识点】 三元基本(均值)不等式解读
相似题推荐
解答题-证明题
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适中
(0.65)
名校
解题方法
【推荐1】若不等式
对于任意
都成立.
(1)求
的值;
(2)设
,求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23aaa0975a368aee5f04cbf7c910132e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19339e3904e9541ff26b30ae5f1242b2.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d229cbec798c9c278a9b5979cb38247.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2340485d850ef1e37356c0d8526b08e5.png)
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解答题-问答题
|
适中
(0.65)
名校
解题方法
【推荐2】设
、
、
为正数,且
.证明:
(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/452419f26b6b832f65b7bd2f98015aff.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4311879d4914afb91646bc4d816c29e3.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0eabb97fcd7362d1d94a814df9c07819.png)
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