I do the problem the same way but end up with a coefficient of 1/4 instead of 1/8, the answer is close because of small decimals but still does not explain why taking the 1/2 factor to begin with was not extraneous.

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- Nov 17th 2012, 08:49 AM #1
## Mean Value

How does the first green box become the second green box, or more importantly WHY does the first green box become the second. I don't see any reason to remove a factor of 1/2(especially when there is no foreseeable reason to do so, I feel as if this would result in extraneous), is there some step i'm missing here? I tried partial fractions but ended up with the original equation.

- Nov 17th 2012, 08:51 AM #2

- Nov 17th 2012, 09:43 AM #3