已知函数
.
(1)当
时,求
的单调区间与极值,
(2)若
,证明:当
,且
时,
恒成立.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99f43e99657ece85b991ae4889bfa8f9.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d275fbb3ee5cd1177ca5a2ceecbbef0f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ec5792dbdc5ee1677ecd53435552272.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9ca796621ca1dc2a5e420bf41583c8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2210f152080d9a68a97c805f5c1cde96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f5eb5616a3f2ffb2ed776848a080f30.png)
更新时间:2024-01-11 18:16:23
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