>>> integrate(exp(x)*g(x), x)
exp(x)*g(x) - D(g(x), x)*exp(x)

Can someone tell me, is this a bug?  If this is intentional, can  
someone please explain why?  If I remember my integration by parts  
correctly, that second term should be Integral(D(g(x), x)*exp(x), x),  
though really it should just be returning Integral(exp(x)*g(x), x) in  
this case.  Otherwise you could expand like this infinitely and never  
get a result.

Aaron Meurer

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