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xuyihan(Edstrayer´ú·¢): ½ð±Ò+5, ·ûºÅ¼ÆËã 2015-10-30 11:19:48
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>> syms a c x y
>> int((y-c)*((y-c)^2-x^2)/((y-c)^2+x^2)^2,x,a,inf)

ans =

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xuyihan(Edstrayer´ú·¢): ½ð±Ò+20, right result 2015-10-30 11:18:57
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