1 . 已知函数
,若函数
有3个零点,则实数a的取值范围为____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5b9d625336e0113e0e84ef3e29d297e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/039f9392112593405d4c0f1bea7d31f3.png)
您最近一年使用:0次
名校
2 . 已知函数
,若方程
有四个不同的解
,且
,则
的取值范围是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9242188b0da3c8ba15b4b1c13e480c42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c342d52fc26cc550a45b80756903bee6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8ccd22fd0ca1a8e1468329284f91b6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3604274ad6707a906eba371a9e884144.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82f2af462c9d5592d1e63800ad0033fd.png)
您最近一年使用:0次
名校
3 . 已知
,若
有
个根
,则
的取值范围是________________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e213eeabb845081d4ebbe1720b884c0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8123ef13dad005bfdf1b1725e23be9da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8ccd22fd0ca1a8e1468329284f91b6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2741ca619df1d9ab3d9ced4c49142dc.png)
您最近一年使用:0次
2017-10-11更新
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993次组卷
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2卷引用:齐鲁名校教科研协作体山东、湖北部分重点中学2018届高三第一次调研联考数学(文)试题