名校
1 . 已知
有两个零点
,
,
有两个零点
,
若区间
,则实数a的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f6178c846d26b39e063c0755c72419e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffd888afdcfdb3e91a157d50f65e915e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4cbd98da32a9d5b1dcf0502c1926b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/291c25fc6a69d6d0ccfb8d839b9b4462.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6033f52389dd8fe5f5f4466e52bcbea8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fff77fae0e322a25aaf1a1b4555230c7.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
2 . 已知关于x的方程
在区间
上有实根,那么
的最小值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b576b8c02e7279923cef855ac13d1295.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a248e47163191168a1b363937eebd618.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ce388fbfaa60714060fa427866e16e4.png)
您最近一年使用:0次
名校
3 . 已知函数
有零点
,函数
有零点
,且
,则实数
的取值范围是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2ea9dc68acd7c6946413a0e901d9b49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f4f0a4f2076febd8bcc2664fe282c46.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df79854c0ad67f1b29ba550474ed7c7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50ad9773440417babce2f38e2ca48c88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2018-05-08更新
|
1031次组卷
|
6卷引用:【全国市级联考】安徽省合肥市2018届高三三模数学(理)试题