【题文】对于,给出下列四个不等式
【题文】对于,给出下列四个不等式
题型:难度:来源:
【题文】对于
![](http://img.shitiku.com.cn/uploads/allimg/20200328/20200328153245-88008.png)
,给出下列四个不等式
①
![](http://img.shitiku.com.cn/uploads/allimg/20200328/20200328153246-16590.png)
②
![](http://img.shitiku.com.cn/uploads/allimg/20200328/20200328153246-27349.png)
③
![](http://img.shitiku.com.cn/uploads/allimg/20200328/20200328153246-37366.png)
④
![](http://img.shitiku.com.cn/uploads/allimg/20200328/20200328153246-19429.png)
其中成立的是
答案
【答案】②④
解析
【解析】解:因为
![](http://img.shitiku.com.cn/uploads/allimg/20200328/20200328153247-12071.png)
,利用对数函数的单调性可知,1中应为
![](http://img.shitiku.com.cn/uploads/allimg/20200328/20200328153247-13706.png)
,2成立,3中应为
![](http://img.shitiku.com.cn/uploads/allimg/20200328/20200328153247-19805.png)
,错误,4成立,故为②④
举一反三
【题文】
![](http://img.shitiku.com.cn/uploads/allimg/20200328/20200328152018-16346.png)
_______________.
【题文】三个数6
0.7,0.7
6,log
0.76的大小顺序是
A.0.76<log0.76<60.7 | B.0.76<60.7<log0.76 |
C.log0.76<60.7<0.76 | D.log0.76<0.76<60.7 |
【题文】 已知
![](http://img.shitiku.com.cn/uploads/allimg/20200328/20200328151421-16370.png)
,则
.
【题文】(1)化简
![](http://img.shitiku.com.cn/uploads/allimg/20200328/20200328151222-90142.png)
(2)求值
![](http://img.shitiku.com.cn/uploads/allimg/20200328/20200328151223-14714.png)
【题文】如右图所示的程序框图的输出值
![](http://img.shitiku.com.cn/uploads/allimg/20200328/20200328151139-49746.png)
,则输入值
![](http://img.shitiku.com.cn/uploads/allimg/20200328/20200328151139-10494.png)
( )
![](http://img.shitiku.com.cn/uploads/allimg/20200328/20200328151139-75730.png)
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