Updates:
Status: Accepted
Labels: Integration Polynomial
Comment #1 on issue 2128 by asmeurer: cannot integrate piecewise function
numerically
http://code.google.com/p/sympy/issues/detail?id=2128
In master, Integral(f, (x, -oo, oo)).evalf() hangs, Integral(f, (x, -oo,
oo)).doit() gives "DomainError: there is no field associated with RR".
Since the latter is a polys error, I tried it in Mateusz's polys11 branch,
and got
In [3]: integrate(f, (x, -oo, oo))
Out[3]: 1.08063375955856
So the issue will be fixed whenever polys11 gets merged in (assuming that
is the correct answer there).
By the way, I did notice that your expressions shows some printing problems
with Piecewise. The "+" for the innermost nested piecewise functions
should be centered, as should the "dx". In all, it's hard to read anyway
(though applying piecewise_fold() a few times makes it a little better).
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