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I need to prove that the equation on top can be written like the eqaution on the bottom, but I have no idea where to start. I have heard ppl saying that I need to use integration by parts etc. Any help is apprecaited!

*note the v's in the red box are different to the v not in the red box.

http://img360.imageshack.us/img360/1044/questionsne4.th.jpg [Broken]

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# Help with a proof

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