【题文】设,,,则( )A.c>b>aB.b>c>aC.a>c>bD.a>b>c
【题文】设,,,则( )A.c>b>aB.b>c>aC.a>c>bD.a>b>c
题型:难度:来源:
【题文】设
![](http://img.shitiku.com.cn/uploads/allimg/20200331/20200331082731-58267.png)
,
![](http://img.shitiku.com.cn/uploads/allimg/20200331/20200331082731-89877.png)
,
![](http://img.shitiku.com.cn/uploads/allimg/20200331/20200331082732-66085.png)
,则( )
A.c>b>a | B.b>c>a | C.a>c>b | D.a>b>c |
答案
【答案】D
解析
【解析】
试题分析:
![](http://img.shitiku.com.cn/uploads/allimg/20200331/20200331082732-91790.png)
,
![](http://img.shitiku.com.cn/uploads/allimg/20200331/20200331082732-26578.png)
,
![](http://img.shitiku.com.cn/uploads/allimg/20200331/20200331082732-28587.png)
,又
![](http://img.shitiku.com.cn/uploads/allimg/20200331/20200331082733-75360.png)
,
![](http://img.shitiku.com.cn/uploads/allimg/20200331/20200331082733-94956.png)
,
![](http://img.shitiku.com.cn/uploads/allimg/20200331/20200331082733-95388.png)
,
![](http://img.shitiku.com.cn/uploads/allimg/20200331/20200331082733-72962.png)
,所以
![](http://img.shitiku.com.cn/uploads/allimg/20200331/20200331082734-75557.png)
,所以
![](http://img.shitiku.com.cn/uploads/allimg/20200331/20200331082734-50164.png)
.
考点:对数与对数运算
举一反三
【题文】
![](http://img.shitiku.com.cn/uploads/allimg/20200331/20200331082220-55839.png)
= ( )
【题文】
![](http://img.shitiku.com.cn/uploads/allimg/20200331/20200331082051-85571.png)
= ( )
【题文】设
![](http://img.shitiku.com.cn/uploads/allimg/20200331/20200331081720-34333.png)
,
![](http://img.shitiku.com.cn/uploads/allimg/20200331/20200331081721-28537.png)
,
![](http://img.shitiku.com.cn/uploads/allimg/20200331/20200331081721-77652.png)
,则( )
A.c>b>a | B.b>c>a | C.a>c>b | D.a>b>c |
【题文】
![](http://img.shitiku.com.cn/uploads/allimg/20200331/20200331081623-84673.png)
= ( )
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