# Problem with an intergral!

paul-martin
Solved

sorry that i disturbed you guys with this, of course the problem as always was simpel i just missed one little detail, i was at first scared i had missed something in the defintion of integration by parts.

Thx for your time!

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## Answers and Replies

paul-martin
It can be hard to se the integration variables which is pi and cero. I am using partial integration there.

paul-martin
It is nothing advanced sen all the sins turn out to be cero.

Staff Emeritus
Science Advisor
Gold Member
I don't understand why you dropped the $\Omega$ when proceeding from Step 4 to Step 5.

paul-martin
http://img388.imageshack.us/img388/4140/integration29jv.jpg [Broken]

Omega=2*pi/T and T= 2pi

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paul-martin
I should mention the answer should be 4/pi