Comment #2 on issue 1500 by asmeurer: Sum does not work with some arguments
http://code.google.com/p/sympy/issues/detail?id=1500
In 32-bit I get:
>>> Sum(m**2+m*exp(m), (m, -3.0/2, 3.0/2)).doit()
Sum(m**2 + m*exp(m), (m, -1.5, 1.5))
In 64-bit, I get:
>>> Sum(m**2+m*exp(m), (m, -3.0/2, 3.0/2)).doit()
Traceback (most recent call last):
File "<console>", line 1, in <module>
File "sympy/concrete/summations.py", line 70, in doit
f = eval_sum(f, (i, a, b))
File "sympy/concrete/summations.py", line 238, in eval_sum
value = eval_sum_symbolic(f.expand(), (i, a, b))
File "sympy/concrete/summations.py", line 259, in eval_sum_symbolic
lrsum = telescopic(L, R, (i, a, b))
File "sympy/concrete/summations.py", line 218, in telescopic
s = solve(L.subs(i, i + m) + R, m)[0]
File "sympy/solvers/solvers.py", line 332, in solve
result = tsolve(f, *symbols)
File "sympy/solvers/solvers.py", line 716, in tsolve
raise NotImplementedError("Unable to solve the equation.")
NotImplementedError: Unable to solve the equation.
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