名校
1 . 某同学在研究函数
时,给出下列结论:①
对任意
成立;②函数
的值域是
;③若
,则一定有
;④函数
在
上有三个零点.则正确结论的序号是_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e09a6aa9ea7322784983a687f3aac8b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d3dfb9993f0852e443ea196e974013d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4166972dec0aa3e8694a44eeb941a08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8b61bb7cb94b4d06f0090df1e365667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33bd24e647a626899a243a3f3984f90a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f27822887caad20f3a075ca2fb74155c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2067a6792ec6f17f8a34d9d49366701a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4aa0df7f1e45f9de29e802c7f19a4f64.png)
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2019-07-16更新
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3卷引用:黑龙江省大庆市萨尔图区大庆实验中学2018-2019学年高二下学期期末数学试题