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erdbeer
08-05-03, 18:20
1. Zeige Integral(0 bis unendlich){cosx/(1+x^2)^3}dx=7pi/16e

谢谢!:14:

baobaoccjj
08-05-04, 13:52
This might help.
http://answers.yahoo.com/question/;_ylc=X3oDMTE1aThkdWZ2BF9TAzIxMTU1MDAxMTgEc2VjA2Fuc19ub3QEc2xrA2Fuc21vcmU-;_ylv=3?qid=20080504034212AAyOuPO