1 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51866bf4c9401ec9529d6ff9643a2a28.png)
(1)若函数
在区间
上为单调增函数,求
的取值范围;
(2)设
,证明:
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51866bf4c9401ec9529d6ff9643a2a28.png)
(1)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ab5e0524def52baf53480b8726784ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66eba129d92ede31b728e2590c4db2a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79c425d7c4fd26e00592c3fa09f4d4f8.png)
您最近一年使用:0次
2018-12-06更新
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177次组卷
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2卷引用:2015年全国高中数学联赛甘肃赛区预赛试题