已知函数
.
(1)若
对任意
恒成立,求实数
的取值范围.
(2)设函数
在区间
上有两个极值点
.
(i)求实数
的取值范围;
(ⅱ)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09b7232da864d342153030a72dbade96.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fe1410e75439facffc343be43339677.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a6330540758a21f46fc7a6d1e6328d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)设函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb13a78cb4badafc332e9554f5651307.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/306ebe50b57311eaaef27937ab06b8e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
(i)求实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(ⅱ)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76d26614b03044272c0dbd8cf736c75e.png)
更新时间:2020-03-05 08:18:03
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