名校
解题方法
1 . 设
为正数,且
. 证明:
(1)
;
(2)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d69582b1a383cda899bfae292812f69d.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68c69ec969e81e98cc5051a1817ac866.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/538f858f3a28c8faa69cb9463d619671.png)
您最近一年使用:0次
2024-05-13更新
|
276次组卷
|
2卷引用:陕西省西安市第一中学2023-2024学年高三下学期4月月考理科数学试题
2 . 已知
.
(1)若
,求
的最小值;
(2)若
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a42fff822c5f61fec5fcd5c8e86941e.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32a1250b1b72fce8f36c8b7149e52271.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81e54e6610fb16479725602ca79da8c2.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/751e274e9107d780c39ba9c49d6daefb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d296d5bbd9d25b8816bcc1ae195aa157.png)
您最近一年使用:0次
2024-04-01更新
|
100次组卷
|
2卷引用:老华大联盟2024届高三下学期3月联考文科数学试卷(全国乙卷)
2023·全国·模拟预测
3 . 已知x,y,
.
(1)若
,证明:
;
(2)若
,证明
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/588e4cf838add469512e328d2e60916b.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5558c083d34cbb0a58d3ce1dc6f5778e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58fb952f9a33887a3f80b04e1e5e6134.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd24c686fbaaa68705d654b880481ffe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eeadd667059ca5e53125d3c0cda85bae.png)
您最近一年使用:0次