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# Another Gmat Prep P.S.

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Manager
Joined: 11 Sep 2008
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22 Feb 2009, 02:06
This topic is locked. If you want to discuss this question please re-post it in the respective forum.

What is it not 1?? Why the absolute value? that allows |X|/X to possibly be negative. Wouldn't that be impossible??

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SVP
Joined: 07 Nov 2007
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Location: New York
Re: Another Gmat Prep P.S. [#permalink]

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22 Feb 2009, 06:36
BuddaBelly wrote:

What is it not 1?? Why the absolute value? that allows |X|/X to possibly be negative. Wouldn't that be impossible??

sqrt(N) --> always postive ( in GMAT)

when x<0
sqrt(x^2) = -x (+ve)

sqrt(x^2)/x = -x/x

when x>0
sqrt(x^2)/x = x/x

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Manager
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Re: Another Gmat Prep P.S. [#permalink]

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22 Feb 2009, 08:50
Yes E.

x2 > 0 ( From $$sqrt(x^^2)$$ > 0 )
i.e x > 0 or x < 0.

Hence the term becomes -x/x or x/x =>= $$modulo(x)$$/x

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Re: Another Gmat Prep P.S.   [#permalink] 22 Feb 2009, 08:50
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