已知函数
,其中常数
,e是自然对数的底数.
(1)若
,求
的最小值;
(2)设使得
恒成立的a的最大值为
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abf47ce746addccc1a23b5ba9c37dfe7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1e69392d21261afd8e5e5f096634669.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb8e1dd8da540badcb9a8f427c5b202e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)设使得
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22e38c541dec8fce1d26886e5ef7d21f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e72adb45c60c2f63b46e65ff787302bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c338c6b7a8d402d7bacdb37d588bd5bc.png)
2022·全国·模拟预测 查看更多[1]
更新时间:2023-03-28 19:58:54
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