【题文】若函数,则=_______________。
题型:难度:来源:
【题文】若函数
![](http://img.shitiku.com.cn/uploads/allimg/20200330/20200330153434-17570.png)
,则
![](http://img.shitiku.com.cn/uploads/allimg/20200330/20200330153434-75256.png)
=_______________。
答案
【答案】2014
解析
【解析】
试题分析:
![](http://img.shitiku.com.cn/uploads/allimg/20200330/20200330153434-72073.png)
=
![](http://img.shitiku.com.cn/uploads/allimg/20200330/20200330153434-75256.png)
=
![](http://img.shitiku.com.cn/uploads/allimg/20200330/20200330153435-58525.png)
=
![](http://img.shitiku.com.cn/uploads/allimg/20200330/20200330153436-78612.png)
+
![](http://img.shitiku.com.cn/uploads/allimg/20200330/20200330153436-59263.png)
+
![](http://img.shitiku.com.cn/uploads/allimg/20200330/20200330153436-23364.png)
+
![](http://img.shitiku.com.cn/uploads/allimg/20200330/20200330153437-38236.png)
+
![](http://img.shitiku.com.cn/uploads/allimg/20200330/20200330153437-63947.png)
+
![](http://img.shitiku.com.cn/uploads/allimg/20200330/20200330153438-78996.png)
+
![](http://img.shitiku.com.cn/uploads/allimg/20200330/20200330153437-38236.png)
+
![](http://img.shitiku.com.cn/uploads/allimg/20200330/20200330153438-51511.png)
+
![](http://img.shitiku.com.cn/uploads/allimg/20200330/20200330153439-57754.png)
=
![](http://img.shitiku.com.cn/uploads/allimg/20200330/20200330153439-18168.png)
+
![](http://img.shitiku.com.cn/uploads/allimg/20200330/20200330153439-18168.png)
+
![](http://img.shitiku.com.cn/uploads/allimg/20200330/20200330153439-18168.png)
+
![](http://img.shitiku.com.cn/uploads/allimg/20200330/20200330153437-38236.png)
+
![](http://img.shitiku.com.cn/uploads/allimg/20200330/20200330153439-18168.png)
=
![](http://img.shitiku.com.cn/uploads/allimg/20200330/20200330153439-32034.png)
考点:1.对数的运算.2.数列的递推的思想.3.分类归纳的思想.
举一反三
【题文】已知函数f(x)=2
x,g(x)=
![](http://img.shitiku.com.cn/uploads/allimg/20200330/20200330152432-83200.png)
+2.
(1)求函数g(x)的值域;
(2)求满足方程f(x)-g(x)=0的x的值.
【题文】已知函数f(x)=2
x,g(x)=
![](http://img.shitiku.com.cn/uploads/allimg/20200330/20200330152014-88437.png)
+2.
(1)求函数g(x)的值域;
(2)求满足方程f(x)-g(x)=0的x的值.
【题文】设a=log
3π,b=log
2![](http://img.shitiku.com.cn/uploads/allimg/20200330/20200330151802-10415.png)
,c=log
3![](http://img.shitiku.com.cn/uploads/allimg/20200330/20200330151802-84794.png)
,则( )
A.a>b>c | B.a>c>b | C.b>a>c | D.b>c>a |
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