函数
,
.
(Ⅰ)求函数
的极值;
(Ⅱ)若
,证明:当
时,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/307bb5726473ed17fc82d14215f435f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eeb56fe203146f8ac9e0d11955ac373f.png)
(Ⅰ)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(Ⅱ)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df7b5582e1931243dbb90b7591137f23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c7b69e93488fcd2a195cb9793e94fc7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/880270d8cc1cf4f9e380f8963cb9f84f.png)
更新时间:2018-04-05 15:27:29
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