Hello, 

my name is Andrei and I'm a student from Germany (I couldn't find a contact 
E-Mail on the website of Sympy, so I'm posting this here).

This website <http://en.wikipedia.org/wiki/User:CRGreathouse/Risch> claims 
that Sympy is the only CAS known to be able to integrate this function in 
finite terms: 

f = (x**2+2*x+1+(3*x+1)*sqrt(x+log(x)))/(x*sqrt(x+log(x))*(x+sqrt(x+log(x))))

Can someone tell me what algorithm is used to integrate f ?
(f is clearly not purely transcendental, so I wounder whether the Risch 
Algorithm for mixed functions is implemented or not)





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