已知函数
.
(1)讨论函数
的单调性;
(2)若
,求证:当
时,
;
(3)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb140d3c2c4f67ac39de4b9592e04897.png)
(1)讨论函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6174a7497c19a22a2a506bfd568415f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/790daaa89fc9d093f45023becf765697.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e9c599e8d420006448905acec2b8234.png)
(3)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d349bc82a16ecc6e075b36c3376c853.png)
更新时间:2023-05-01 16:45:47
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