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设函数f(x)定义在实数集上,它的图象关于直线x=1对称,且当x≥1时,f(x)...
设函数f(x)定义在实数集上,它的图象关于直线x=1对称,且当x≥1时,f(x)=lnx-x,则有( )
A.
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B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225157519573297/SYS201311012251575195732005_ST/1.png)
C.
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D.
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