Question

已知函数f(x)=aln x-blg x+2,若f(1/2013)=4,则f(2013)等于 A.0 B.1 C.2 D

Answer 1

A

g(x)=aln x-blg x

f(1/2013)=4,g(1/2013)=2

g(2013)=-aln(1/2013)+blg (1/2003)=-g(1/2013)=-2

ln(1/x)=-lnx

f(2013)=0