Question: symbolic calculus 101 (how do I ...)

Please give a clue... I would have expected that if diff(Fu,v); evaluates to zero (and if all functions involved are nice, say entire), then the following would be equal: int(int(Fu*Fuv,v=0..infinity),u=0..max); int(Fu*int(Fuv,v=0..infinity),u=0..max); But Maple does not agree... Am I missing something?
Please Wait...