Status: New
Owner: ----
Labels: Type-Defect Priority-Medium
New issue 1333 by ulrik.sverdrup: Integral(x,x).series(x) raises TypeError
http://code.google.com/p/sympy/issues/detail?id=1333
Tested using git ccedb6d (21 march 2009)
Expected result:
Similar to this case:
In [17]: Integral(sin(x),x).series(x)
Out[17]:
2 4 6
x x x
── - ── + ─── + O(x**7)
2 24 720
Actual results:
In [16]: Integral(x,x).series(x)
---------------------------------------------------------------------------
TypeError Traceback (most recent call last)
/home/ulrik/pt/src/sympy/<ipython console> in <module>()
/home/ulrik/pt/src/sympy/sympy/core/basic.pyc in series(self, x, point, n,
dir)
2037 point = sympify(point)
2038 if dir == "+":
-> 2039 return self.nseries(x, point, n)
2040 elif dir == "-":
2041 return self.subs(x, -x).nseries(x, -point, n).subs(x,
-x)
/home/ulrik/pt/src/sympy/sympy/core/basic.pyc in nseries(self, x, x0, n)
2104 See also lseries().
2105 """
-> 2106 return self._eval_nseries(x, x0, n)
2107
2108 def _eval_nseries(self, x, x0, n):
/home/ulrik/pt/src/sympy/sympy/integrals/integrals.pyc in
_eval_nseries(self, x, x0, n)
331 return integrate(arg.removeO(), (x, a, b)) +
arg.getO()*x
332 else:
--> 333 return integrate(arg.removeO(), x) + arg.getO()*x
334
335 @threaded(use_add=False)
TypeError: unsupported operand type(s) for *: 'NoneType' and 'Symbol'
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