1 . 已知函数
,(
是自然对数的底数)
(1)求
的单调递减区间;
(2)记
,若
,求
在
上的零点个数.
(参考数据:
)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/776fa6439168522f352d683994355658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)记
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00210f79b04a8f6bc1922433d00bc89a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97d0ee7b8d3fa2c655c90a05c6b52338.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3ff8dca35b759d3051b62badd7d76bc.png)
(参考数据:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/791d941a68f38eab62db8ea91c051a37.png)
您最近一年使用:0次
2020-08-09更新
|
640次组卷
|
4卷引用:2020届安徽省合肥市高三下学期4月第二次教学质量检测数学(理)试题