Using 8.3.beta6 on Linux Manjaro
I do not know if this is known or not. Problem with integrate
sage: var('x')
sage: integrate((cos(x) + 2*sin(x) + 1)/(cos(x)^2 - 2*cos(x)*sin(x) + 2*sin(x) + 3),x)
gives
RuntimeError Traceback (most recent call last)
<ipython-input-2-f1dceacbaccd> in <module>()
----> 1 integrate((cos(x) + Integer(2)*sin(x) + Integer(1))/(cos(x)**Integer(2) - Integer(2)*cos(x)*sin(x) + Integer(2)*sin(x) + Integer(3)),x)
/usr/lib/python2.7/site-packages/sage/misc/functional.py in integral(x, *args, **kwds)
751 """
752 if hasattr(x, 'integral'):
--> 753 return x.integral(*args, **kwds)
754 else:
755 from sage.symbolic.ring import SR
/usr/lib/python2.7/site-packages/sage/symbolic/expression.pyx in sage.symbolic.expression.Expression.integral (build/cythonized/sage/symbolic/expression.cpp:69762)()
12345 R = ring.SR
12346 return R(integral(f, v, a, b, **kwds))
> 12347 return integral(self, *args, **kwds)
12348
12349 integrate = integral
/usr/lib/python2.7/site-packages/sage/symbolic/integration/integral.py in integrate(expression, v, a, b, algorithm, hold)
816 return integrator(expression, v, a, b)
817 if a is None:
--> 818 return indefinite_integral(expression, v, hold=hold)
819 else:
820 return definite_integral(expression, v, a, b, hold=hold)
/usr/lib/python2.7/site-packages/sage/symbolic/function.pyx in sage.symbolic.function.BuiltinFunction.__call__ (build/cythonized/sage/symbolic/function.cpp:11922)()
996 res = self._evalf_try_(*args)
997 if res is None:
--> 998 res = super(BuiltinFunction, self).__call__(
999 *args, coerce=coerce, hold=hold)
1000
/usr/lib/python2.7/site-packages/sage/symbolic/function.pyx in sage.symbolic.function.Function.__call__ (build/cythonized/sage/symbolic/function.cpp:6949)()
490 (<Expression>args[0])._gobj, hold)
491 elif self._nargs == 2:
--> 492 res = g_function_eval2(self._serial, (<Expression>args[0])._gobj,
493 (<Expression>args[1])._gobj, hold)
494 elif self._nargs == 3:
/usr/lib/python2.7/site-packages/sage/symbolic/integration/integral.py in _eval_(self, f, x)
88 for integrator in self.integrators:
89 try:
---> 90 return integrator(f, x)
91 except NotImplementedError:
92 pass
/usr/lib/python2.7/site-packages/sage/symbolic/integration/external.py in maxima_integrator(expression, v, a, b)
30 expression = SR(expression)
31 if a is None:
---> 32 result = maxima.sr_integral(expression,v)
33 else:
34 result = maxima.sr_integral(expression, v, a, b)
/usr/lib/python2.7/site-packages/sage/interfaces/maxima_lib.py in sr_integral(self, *args)
803 """
804 try:
--> 805 return max_to_sr(maxima_eval(([max_integrate],[sr_to_max(SR(a)) for a in args])))
806 except RuntimeError as error:
807 s = str(error)
/usr/lib/python2.7/site-packages/sage/libs/ecl.pyx in sage.libs.ecl.EclObject.__call__ (build/cythonized/sage/libs/ecl.c:8639)()
804 """
805 lispargs = EclObject(list(args))
--> 806 return ecl_wrap(ecl_safe_apply(self.obj,(<EclObject>lispargs).obj))
807
808 def __richcmp__(left, right, int op):
/usr/lib/python2.7/site-packages/sage/libs/ecl.pyx in sage.libs.ecl.ecl_safe_apply (build/cythonized/sage/libs/ecl.c:6294)()
376 if ecl_nvalues > 1:
377 s = si_coerce_to_base_string(ecl_values(1))
--> 378 raise RuntimeError("ECL says: {}".format(
379 char_to_str(ecl_base_string_pointer_safe(s))))
380 else:
RuntimeError: ECL says: THROW: The catch RAT-ERR is undefined.
