题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103005336-29224.png)
A.a<0 | B.a>0 | C.a<-1 | D.a>1 |
答案
解析
试题分析:方程
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103005336-29224.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103005336-40411.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103005336-29224.png)
点评:判断两个条件之间的关系是一个重要的考点。本题就是结合结论:
若
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103005336-55312.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103005332-59298.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103005333-61986.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103005333-25915.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103005333-52174.png)
A.充分不必要条件 | B.必要不充分条件 |
C.充分必要条件 | D.既不充分也不必要条件 |
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103005330-57194.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103005330-79520.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103005331-34596.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103005331-94721.png)
A.充要条件 | B.必要不充分条件 |
C.充分不必要条件 | D.既不充分也不必要条件 |
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103005327-86177.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103005328-68925.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103005328-54444.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103005323-85891.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103005323-92817.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103005323-55751.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103005323-85891.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103005323-92817.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103005323-85891.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103005323-92817.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103005323-65612.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103005324-60592.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103005324-96949.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103005324-52255.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103005324-15259.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103005324-55244.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103005323-65612.png)
A.充分布不必要的条件 | B.必要而不充分的条件 |
C.充要条件 | D.既不充分也不必要的条件 |
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103005320-53394.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103005320-18589.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103005320-65842.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191103/20191103005321-52093.png)
A.最小值8 | B.最大值8 | C.最小值4 | D.最大值4 |
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