Comment #3 on issue 3716 by [email protected]: Integrals over non-interval
sets
http://code.google.com/p/sympy/issues/detail?id=3716
This comes up in stats. Queries like P(X**2 > 1) produce an integrand (the
probability density function) and the domain (in this case the union x < -1
U x > 1.)
It's really nice to just pass both of them off to integrate and be done
with it.
In the case of FiniteSet yes, it should be zero except possibly in the case
where a DiracDelta is present. Really though, I don't want to have to
think about this. If someone says P(Eq(2*X, 3)) I just want to produce
integral
Integral(Density(2*X), (x, FiniteSet(3)))
and hand it off to the more curated parts of SymPy.
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