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Release Notes for 0.7.3
These are the release notes for SymPy 0.7.3, which hasn't been released yet.
This release includes Risch integration algorithm from
Aaron Meurer's 2010 Google Summer of Code project.
This makes integrate much more powerful and much faster for the supported
functions. The algorithm is called automatically from integrate(). For now,
only transcendental elementary functions containing exp or log are
supported. To access the algorithm directly, use integrate(expr, x, risch=True). The algorithm has the ability to prove that integrals are
nonelementary. To determine if a function is nonelementary, integrate using
risch=True. If the resulting Integral class is an instance of
NonElementaryIntegral, then it is not elementary (otherwise, that part of
the algorithm has just not been implemented yet).