wait. my question has been changed:

Use the Riemann-Lebesgue Lemma to get the asymptotic expansion of :

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- Nov 18th 2009, 04:23 PMpengchao1024how did u calculate this integral
wait. my question has been changed:

Use the Riemann-Lebesgue Lemma to get the asymptotic expansion of :

- Nov 18th 2009, 04:26 PMmr fantastic