解题方法
1 . 已知正实数
,
,
满足
.
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/114e284174ee4ae85052005c8069f45d.png)
证明:(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/767f253ac1be9ce208ddd6d6bb50aec0.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e306a07d6117fe798a3ad64ae652c72.png)
您最近一年使用:0次
2021-03-05更新
|
555次组卷
|
2卷引用:江西省南昌市2021届高三下学期一调考试数学(理)试题
名校
2 . 证明下列不等式
(1)当
时,证明
;
(2)已知正数x,y,z,满足
,证明
.
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fde64f4d3c38e43fbdee24eadc4b0dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e48bcc1bb0225d09d8d8fecd669e3bf.png)
(2)已知正数x,y,z,满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd24c686fbaaa68705d654b880481ffe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad2ea4b3b956adc3ee64b9255528ea51.png)
您最近一年使用:0次