functions

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functions

by gorsar » Sun Nov 23, 2008 10:26 am
For which of the following functions f is f(x)=f(1-x) for all x?

A. f(x)=1-x
B. f(x)=1-x^2
C. f(x)=x^2-(1-x)^2
D. f(x)=x^2(1-x)^2
E. f(x)=x/1-x

OG answer is D

Can anyone explaine please?
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