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inequality optimization exponent question

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gobaudd
 Post subject: inequality optimization exponent question
 Post Posted: Wed Sep 15, 2010 10:19 pm 
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Students


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on page 99 of the equations book it says set terms with even exponents to 0 when trying to solve optimization problems. what does this mean/is there an example? i don't see this covered in the chapter.
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tim
 Post subject: Re: inequality optimization exponent question
 Post Posted: Mon Sep 20, 2010 8:20 pm 
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ManhattanGMAT Staff


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Location: Southwest Airlines, seat 21C
a simple example would be this: say we want to find the minimum possible value of x^2 + 7. set x=0 because that's going to give you the smallest possible value of x^2, and the answer is then 7. not a really useful trick to be honest; i wouldn't worry about it too much..

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Tim Sanders
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