已知
.
(1)求
的单调区间;
(2)若
,恒有
成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b2a89c7815eb17d5266d0ac2eacdde.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6422b9c2e93a91fe9e39ce4d9dabb0fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2db609429f9ef0c3bd8a4246ea9114.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
更新时间:2020-05-06 13:45:23
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【推荐1】已知
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【推荐2】已知函数
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(1)当
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(2)设函数
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4e1d06ad0e826f907c978269c672c3a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/150e8e4ca6aa729a72a6a17c36b8ebfe.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/604eb1137c0a9b9f5fbef8434eefffd6.png)
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