已知函数
,对任意实数t,函数f(x)在R上总是不单调,则实数a的取值范围是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57e7d45c92838cbc40f5cb987f87bb00.png)
更新时间:2021-10-31 22:41:01
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【知识点】 根据分段函数的单调性求参数
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