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GMATPrep function

by lilu » Tue Apr 21, 2009 10:24 am
OA is D
I think this is not a difficult question, but I got it wrong and would like to see how others would solve it.

Thank you
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Master | Next Rank: 500 Posts
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by pakaskwa » Tue Apr 21, 2009 10:49 am
From question stem we can get:
g(2)=(2^2+2)/(2-1)=6 --> 1/g(2)=1/6
g(x)=(x^2+2)/(x-1) --> 1/g(x)=(x-1) /(x^2+2)

[1/g(2)]*[1/g(x)] = (x-1) /6(x^2+2)

Choose D.
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