已知函数
.
(1)求函数
的单调区间;
(2)若函数
(
是自然对数的底数)恰有一个零点,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a8320fad033e1f51aa536b53e5df6f.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
(2)若函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54019518371170891e205400aa72c2a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/168b3e4b1d6f04226fa2687a72a268b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
更新时间:2020-05-27 23:39:32
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解题方法
【推荐1】已知
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【推荐2】已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/871d31a29d57962be3ba25c9be6ca9cb.png)
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(3)若
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