【题文】计算:(log29)·(log34)=________.
题型:难度:来源:
【题文】计算:(log29)·(log34)=________.
答案
【答案】4
解析
【解析】(log
29)·(log
34)=
![](http://img.shitiku.com.cn/uploads/allimg/20200330/20200330153651-91116.png)
×
![](http://img.shitiku.com.cn/uploads/allimg/20200330/20200330153652-96413.png)
=
![](http://img.shitiku.com.cn/uploads/allimg/20200330/20200330153652-30046.png)
×
![](http://img.shitiku.com.cn/uploads/allimg/20200330/20200330153652-33742.png)
=4.
举一反三
【题文】若函数y=f(x)是函数y=a
x(a>0,且a≠1)的反函数,且f(2)=1,则f(x)=________.
【题文】设函数f(x)=
![](http://img.shitiku.com.cn/uploads/allimg/20200330/20200330153630-48116.png)
,若f(m)<f(-m),则实数m的取值范围是____________.
【题文】函数y=
![](http://img.shitiku.com.cn/uploads/allimg/20200330/20200330153625-70413.png)
(x
2-6x+17)的值域是________.
【题文】计算:(log
29)·(log
34)=________.
【题文】设2
a=5
b=m,且
![](http://img.shitiku.com.cn/uploads/allimg/20200330/20200330153612-79168.png)
+
![](http://img.shitiku.com.cn/uploads/allimg/20200330/20200330153612-99874.png)
=2,则m=________.
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