Comment #28 on issue 1116 by [email protected]: integrate outputs wrong
result when the function is singular
http://code.google.com/p/sympy/issues/detail?id=1116
Well i did not get why this is a big deal ,
[0] is not in the domain of the function so when integrate(1/(x**2), (x,
-1, 1))
what actually is done is as [-1, 1] includes 0, and split the interval
into [-1,
0], [0, 1].
and then for first part for [-1,0] ->lim(e->0) [-1/e-1] and for second part
[0,1] ->lim(e->0) [1/e-1]
adding two it becomes lim(e->0)[-2]=-2
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