已知函数
在其定义域内有两个不同的极值点.
(1)求
的取值范围;
(2)试比较
与
的大小,并说明理由;
(3)设
的两个极值点为
,证明
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cca9508169f3a9ded9a6a7be2ec4be49.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)试比较
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48fda4284fb28f4e98554b32df14b590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dbfb45a46a2ebba2a9db634ad5942608.png)
(3)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3661dbd3b2c578c685e6a11a4102ddd.png)
更新时间:2019-09-08 08:27:18
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