已知函数
,
.
(1)求证:
在
上单调递增;
(2)当
时,
恒成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dacadf0bb04dfc4ab685fe25330c01fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/247cbdf2d10546b06d033671a54d974f.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f87743947bb4b490f2940496efcaca9.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4538e1147e80efaf7439de371282df5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5f8991b6cc8f753450b32ab3ede8b99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
22-23高三上·福建三明·期末 查看更多[3]
更新时间:2023-06-18 09:22:24
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(ii)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
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