已知函数f(x)=|log2x|,正实数m,n满足m<n,且f(m)=f(n),则mn=( )。
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已知函数f(x)=|log2x|,正实数m,n满足m<n,且f(m)=f(n),则mn=( )。 |
答案
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举一反三
若函数f(x)=loga(x3﹣ax)(a>0,a≠1)在区间 内单调递增,则a的取值范围是 |
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A.![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820183313-91041.png) B.![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820183314-51437.png) C.![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820183314-31214.png) D.![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820183314-99792.png) |
若函数f(x)=loga(x3﹣ax)(a>0,a≠1)在区间 内单调递增,则a的取值范围是 |
[ ] |
A.![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820183311-74768.png) B.![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820183312-38820.png) C.![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820183312-45439.png) D.![](http://img.shitiku.com.cn/uploads/allimg/20190820/20190820183312-38260.png) |
若 ,则 |
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A.c>b>a B.b>c>a C.a>b>c D.b>a>c |
设 ,则 |
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A.a<b<c B.b<c<a C.c<b<a D.c<a<b |
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