even
5 Answers
Rohan Ghosh
·2008-11-21 03:26:08
just simplify the expression a bit u will get the answer (after putting f(-x))
krish1092
·2008-11-21 03:28:50
f(-x)= -x/(1-2^-x) +x/2
=-x 2^x/((2^x)-1) + x/2
= - x((2^x)-1+1)/((2^x)-1) + (x/2)
= - x(2^x-1)/(2^x-1) - x/(2^x)-1 + x/2
= -x+x/(1-2^x) +x/2
=x/(1-2^x)-x/2
Therefore the function is even!