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need help on GMATPrep questions!!

This topic has 2 member replies
iomail Newbie | Next Rank: 10 Posts Default Avatar
Joined
22 May 2007
Posted:
7 messages

need help on GMATPrep questions!!

Post Fri Jul 13, 2007 3:09 pm
Can someone help me on these??
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iomail Newbie | Next Rank: 10 Posts Default Avatar
Joined
22 May 2007
Posted:
7 messages
Post Sat Jul 14, 2007 12:31 am
Great! thank you so much...
I really got stuck with these functions!
Thanks again for your clear explaination...

Ciao

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jayhawk2001 Community Manager
Joined
28 Jan 2007
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Post Fri Jul 13, 2007 3:15 pm
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

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