hello!

I have to solve :

well:

if weknow that:

and

then what do we exactly do with 2xdx in the numerator? Dont we just have 2x too much???

many thanks!

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- July 22nd 2013, 03:53 AM #1

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- July 22nd 2013, 04:23 AM #2

- July 22nd 2013, 08:22 AM #3

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