need help on GMATPrep questions!!

iomail · Posted: Fri Jul 13, 2007 4:09 pm Post subject: need help on GMATPrep questions!!

Can someone help me on these??

jayhawk2001 · Posted: Fri Jul 13, 2007 4:15 pm Post subject:

For the first question, please check

http://www.beatthegmat.com/viewtopic.php?t=3852

For the second question,

1 - f(x) = 1-x, f(1-x) = 1-(1-x) = x. So, not equal

2 - f(x) = 1-x^2, f(1-x) = 1-(1-x)^2. Not equal

3 - Same logic. Not equal

5 - f(x) = x/(1-x), f(1-x) = (1-x) / x. Not equal

4 satisfies condition

f(x) = x^2(1-x)^2
f(1-x) =(1-x)^2*x^2

Both equal

iomail · Posted: Sat Jul 14, 2007 1:31 am Post subject:

Great! thank you so much...
I really got stuck with these functions!
Thanks again for your clear explaination...

Ciao