题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102074326-86025.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102074327-11756.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102074327-80166.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102074327-17944.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102074327-11756.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102074327-95976.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102074328-68267.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102074328-94667.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102074328-69125.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102074328-41007.png)
解析
试题分析:根据二次函数恒成立的充要条件,我们可以求出命题p为真时,实数a的取值范围,根据二次函数有实根的充要条件,我们可以求出命题q为真时,实数a的取值范围,然后根据p∨q为真命题,p∧q为假命题,则命题p,q中一个为真一个为假,分类讨论后,即可得到实数a的取值范围.
试题解析:命题
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102074329-52506.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102074327-11756.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102074327-80166.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102074329-27589.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102074329-13382.png)
命题
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102074327-17944.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102074327-11756.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102074329-63030.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102074330-83063.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102074330-77087.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102074330-95425.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102074330-40419.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102074328-68267.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102074328-94667.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102074330-83063.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102074331-48616.png)
如果P正确,且q不正确,则
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102074331-36388.png)
如果q正确,且P不正确,则
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102074331-56006.png)
所以实数
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102074328-69125.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102074328-41007.png)
核心考点
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102074317-57513.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102074317-82752.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102074318-59997.png)
A.![]() ![]() ![]() |
B.![]() ![]() ![]() |
C.![]() ![]() ![]() |
D.![]() ![]() ![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102074310-26183.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102074310-91294.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102074310-69418.png)
A.![]() ![]() ![]() | B.![]() ![]() ![]() |
C.![]() ![]() ![]() | D.![]() ![]() ![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102074245-77104.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102074245-26548.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102074245-77104.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102074245-77104.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102074245-26548.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102074245-77104.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102074245-26548.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102074245-77104.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102074245-26548.png)
A.1个 | B.2个 | C.3个 | D.4个 |
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102074233-28948.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102074234-15005.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102074234-52569.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102074234-31809.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102074235-87646.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102074233-28948.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102074235-89069.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102074235-36132.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102074157-29187.png)
![](http://img.shitiku.com.cn/uploads/allimg/20191102/20191102074157-49219.png)
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