已知函数
,
,
.
(1)若
,
,求函数
的单调区间;
(2)设
.
(i)若函数
有极值,求实数
的取值范围;
(ii)若
(
),求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17f74eae48e8c991c8caf3da216a28c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b7cf9c6c3fa07f63718af5b2eb8faeb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/773ca22fc12ade9e60dbc749ba5cfa73.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f22a4a0dd7307a1323d25331e60782d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a3c442579603164f3fc19458677d307.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f3c2be7482719651bcf491949681e05.png)
(i)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61c388166862b3ccfcc7ca749ebe5949.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(ii)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4236cb713924d1543201ca3a7ab593f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33bd24e647a626899a243a3f3984f90a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a991517943e4e3e4bfc4c8ab981a061c.png)
更新时间:2018-09-08 09:32:09
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