名校
解题方法
1 . 已知函数
,
,
.若函数
,
在区间
上都是单调函数且它们的单调性相同,则实数
的取值范围为( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2dda9fe5fbbbfc1741d5c387f26da8d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f9b00c124ee56e0acef3d9f10f4cc22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0dacc400d55a1a447d426d7a2312f3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4669810732b633b60dbeaf0bf57204f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a2ec965488c7e1cea085463c7731285.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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