解答题-问答题 较难0.4 引用1 组卷292
已知函数
(其中
,且
为常数)
(I)若对于任意的
,都有
成立,求
的取值范围;
(II)在(Ⅰ)的条件下,若方程
在
上有且只有一个实根,求
的取值范围.
![](https://img.xkw.com/dksih/QBM/2016/5/31/1572676493770752/1572676500029440/STEM/af00e58821f448cc8a35d47cdd95825b.png)
![](https://img.xkw.com/dksih/QBM/2016/5/31/1572676493770752/1572676500029440/STEM/da4c82027a55430f9cac1e06154a621c.png)
![](https://img.xkw.com/dksih/QBM/2016/5/31/1572676493770752/1572676500029440/STEM/6928000a3eff40bbac43a299518dc56d.png)
(I)若对于任意的
![](https://img.xkw.com/dksih/QBM/2016/5/31/1572676493770752/1572676500029440/STEM/359a7e1acba54aed94f2a21e0d55d0a2.png)
![](https://img.xkw.com/dksih/QBM/2016/5/31/1572676493770752/1572676500029440/STEM/0eda1c4902644decb20435425458b4a1.png)
![](https://img.xkw.com/dksih/QBM/2016/5/31/1572676493770752/1572676500029440/STEM/6928000a3eff40bbac43a299518dc56d.png)
(II)在(Ⅰ)的条件下,若方程
![](https://img.xkw.com/dksih/QBM/2016/5/31/1572676493770752/1572676500029440/STEM/598be6170c9a44189a49921586ec280f.png)
![](https://img.xkw.com/dksih/QBM/2016/5/31/1572676493770752/1572676500029440/STEM/d16b5d32f4b547c181f4f4e97d3ed531.png)
![](https://img.xkw.com/dksih/QBM/2016/5/31/1572676493770752/1572676500029440/STEM/6928000a3eff40bbac43a299518dc56d.png)
15-16高二上·江西宜春·期末
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