已知函数
,若关于
的不等式
恒成立,求实数
的取值范围
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1a7c2664e813267c525d6e5954a0f09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/018857ec6e498113b3b12a730d9313da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
2022高三·全国·专题练习 查看更多[3]
更新时间:2023-05-01 00:07:12
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【知识点】 利用导数研究不等式恒成立问题
相似题推荐
解答题-问答题
|
较难
(0.4)
名校
【推荐1】设函数
,
.
(1)判断函数:
在
的单调性;
(2)对于区间
上的任意不相等实数
、
,都有
成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c6fb4e865cc70f87c875846bcb96fef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0c4473159277aed64ea96c4af087954.png)
(1)判断函数:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8d22b4beb798f9b1b12b9036e725f2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7dcdd87d593df4a5c5e98d47fe1cfa6.png)
(2)对于区间
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6c1756b564bf1d998d8179637011c88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/191a9f1cd3402de148664b7fbe7a0c79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
名校
【推荐2】已知函数
(e是自然对数的底数,
).
(1)讨论函数
单调性;
(2)若
,
,求a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe412208408641cf7ff5455adfb74d3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b6894e8c345a035e89ec672503a01f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6422b9c2e93a91fe9e39ce4d9dabb0fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86fb2df86e07b4b780ccb3064bb609f1.png)
您最近一年使用:0次