解题方法
1 . 已知函数
,
,
,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1648824aac8d7a1dd8906b496da237c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e91ff4d023442449890db3a980fb9aa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ab44c3b6398982bfce109d41672c9a7.png)
A.当m>4时,f(x)的值域为R |
B.![]() |
C.若函数f(x)有零点,则实数m的取值范围是![]() |
D.当m=3时,不等式h(x-3)<h(2x-1)的解集为![]() |
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