Hi all, the following code was working fine in 6.4.1 (I am using the AIIMS ppa in Ubuntu) and now after the 6.5 upgrade, it doesn't work anymore. Assume I have defined all variables.
u(t) = exp(-(t-t_0)^2/(2*sigma^2)) + exp(-(t-t_1)^2/(2*sigma^2)) ; u(t);
u_tilde = integral(u(t)*exp(-I*omega*t), t, -infinity, +infinity, hold=False).simplify_full(); u_tilde;
The problem is in simplify_full(). The erf function and their limits are not evaluated for some reason. I have a hunch this problem has been posted before but I am not sure. The full traceback is given below. Any help is appreciated. Thanks
---------------------------------------------------------------------------
TypeError Traceback (most recent call last)
<ipython-input-8-66e6236c7bf7> in <module>()
----> 1 u_tilde = integral(u(t)*exp(-I*omega*t), t, -infinity, +infinity, hold=False).simplify_full(); u_tilde;
/usr/lib/sagemath/src/sage/symbolic/expression.pyx in sage.symbolic.expression.Expression.simplify_full (build/cythonized/sage/symbolic/expression.cpp:40350)()
8258 """
8259 x = self
-> 8260 x = x.simplify_factorial()
8261 x = x.simplify_rectform()
8262 x = x.simplify_trig()
/usr/lib/sagemath/src/sage/symbolic/expression.pyx in sage.symbolic.expression.Expression.simplify_factorial (build/cythonized/sage/symbolic/expression.cpp:43472)()
8729
8730 """
-> 8731 return self.parent()(self._maxima_().makefact().factcomb().minfactorial())
8732
8733 factorial_simplify = simplify_factorial
/usr/lib/sagemath/src/sage/symbolic/expression.pyx in sage.symbolic.expression.Expression._maxima_ (build/cythonized/sage/symbolic/expression.cpp:5512)()
582 # Maybe not such a great idea because the "default" interface is another one
583 from sage.calculus.calculus import maxima
--> 584 return super(Expression, self)._interface_(maxima)
585 else:
586 return super(Expression, self)._interface_(session)
/usr/lib/sagemath/src/sage/structure/sage_object.pyx in sage.structure.sage_object.SageObject._interface_ (build/cythonized/sage/structure/sage_object.c:5203)()
592 raise NotImplementedError, "coercion of object %s to %s not implemented:\n%s\n%s"%\
593 (repr(self), I)
--> 594 X = I(s)
595 if c:
596 try:
/usr/lib/sagemath/local/lib/python2.7/site-packages/sage/interfaces/interface.pyc in __call__(self, x, name)
197
198 if isinstance(x, basestring):
--> 199 return cls(self, x, name=name)
200 try:
201 return self._coerce_from_special_method(x)
/usr/lib/sagemath/local/lib/python2.7/site-packages/sage/interfaces/interface.pyc in __init__(self, parent, value, is_name, name)
624 self._name = parent._create(value, name=name)
625 except (TypeError, RuntimeError, ValueError) as x:
--> 626 raise TypeError(x)
627
628 def _latex_(self):
TypeError: ECL says: Error executing code in Maxima:
