题目内容
给出以下四个结论:
①函数
的对称中心是![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824032736351575.png)
②若不等式
对任意的x∈R都成立,则
;
③已知点
与点Q(l,0)在直线
两侧,则
;
④若将函数
的图像向右平移
个单位后变为偶函数,则
的最小值是
.
其中正确的结论是____________(写出所有正确结论的编号).
①函数
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824032736336710.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824032736351575.png)
②若不等式
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824032736367652.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824032736382511.png)
③已知点
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824032736398539.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824032736414648.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824032736429567.png)
④若将函数
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824032736445935.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824032736460533.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824032736460311.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824032736492430.png)
其中正确的结论是____________(写出所有正确结论的编号).
③④
试题分析:因为函数
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824032736336710.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824032736523552.png)
不等式
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824032736367652.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824032736538203.png)
点
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824032736398539.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824032736414648.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824032736585640.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824032736429567.png)
若将函数
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824032736445935.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824032736460533.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824032736648952.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824032736663384.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824032736460311.png)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824032736492430.png)
综上知答案为③④.
![](http://thumb2018.1010pic.com/images/loading.gif)
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