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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
Elapsed Time: 00:00
  • Lap #[LAPCOUNT] ([LAPTIME])
    Can someone help me on these??
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    jayhawk2001 Community Manager
    Joined
    28 Jan 2007
    Posted:
    789 messages
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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

    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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