Updates:
        Status: Accepted
        Labels: Integration Series

Comment #1 on issue 1732 by asmeurer: integrate(sin(x).series(x)) gives traceback
http://code.google.com/p/sympy/issues/detail?id=1732

The problem is of course with the Order term.

In [3]: integrate(O(x**6), x)
...
AttributeError: 'NoneType' object has no attribute 'total_degree'

I'm not to sure. Is it safe to say that integrate(O(x**n), x) == O(x**(n + 1))? I know you can't do the reverse with differentiation, because the derivative of a function can be unbounded even when the function is bounded (consider sin(x**n), which itself is O(1) but who's derivative is O(x**(n - 1))). But intuitively, it seems like integration might be different because you are limited by the area under the curve.

Otherwise, this shouldn't work without calling .removeO() first (though it needs a better exception).

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