Can anybody help me out with equation 9.25 in Srednicki's QFT book?(adsbygoogle = window.adsbygoogle || []).push({});

He says the in the eq. 9.25 an integration by parts has been carried out. I do not see how. I guess we integrate 9.9 and get then 9.25 somehow, but how? Any hints?

thank you

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# Srednicki 9.25

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