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设偶函数f(x)满足f(x)=2x-4 (x0),则=
(A) (B)
(C) (D)
设偶函数f(x)满足f(x)=2x-4 (x0),则= ( )
A. B.
C. D.
设偶函数f(x)满足f(x)=2x-4 (x0),则=( )
A. B.
C. D.