已知命题
存在
,使得
,若
是真命题,则实数
的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99e600d9843ce406c441b402837d0388.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1864b98153200f5929787295de2c1e38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53d341bf86edb995c2c8b14144c9203c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
更新时间:2017-02-16 09:06:54
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