名校
解题方法
1 . 已知
,且
.
(1)证明:
;
(2)求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2684b72f9f38f5046c8ecd4280b7b14b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a7dbc702617c765a573961953cc0901.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ec307143b4bf45106369f256a796d61.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c9dd044c24a1c2f7d5b2bce978b450.png)
您最近一年使用:0次
2024-02-23更新
|
429次组卷
|
5卷引用:陕西省安康市2024届高三下学期开学测评数学(理科)试题
名校
解题方法
2 . 已知
,
,
,函数
.
(1)当
时,求不等式
的解集;
(2)若函数
的最小值为3,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca5fd57c2c2fcc3c7a574fdd1467d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cec12441802f71e803efaf2c62ee588.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f53e02b2c3488ff1c7bc9fd8ad7dda92.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b65e19e487ed609540dcbdac3fda53e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/709db55f0b99a5023eda64def7d72ea2.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25f9a67d0c6387f646e9041cc37ef63d.png)
您最近一年使用:0次
2020-09-26更新
|
117次组卷
|
6卷引用:陕西省安康市高新中学2020-2021学年高三上学期8月摸底考试数学(文)试题