sage: Ex=(1-2*x^(1/3))^(3/4)/x
sage: integrate(Ex, x, algorithm="giac")
---------------------------------------------------------------------------
SyntaxError                               Traceback (most recent call last)
/usr/local/sage-P3-2/local/lib/python3.7/site-packages/sage/interfaces/giac.py in _sage_(self, locals)
   1100                 return symbolic_expression_from_string(result, lsymbols,
-> 1101                     accept_sequence=True)
   1102 

/usr/local/sage-P3-2/local/lib/python3.7/site-packages/sage/calculus/calculus.py in symbolic_expression_from_string(s, syms, accept_sequence)
   2384             _augmented_syms = syms
-> 2385             return parse_func(s)
   2386         finally:

/usr/local/sage-P3-2/local/lib/python3.7/site-packages/sage/misc/parser.pyx in sage.misc.parser.Parser.parse_sequence (build/cythonized/sage/misc/parser.c:5479)()
    538 
--> 539     cpdef parse_sequence(self, s):
    540         """

/usr/local/sage-P3-2/local/lib/python3.7/site-packages/sage/misc/parser.pyx in sage.misc.parser.Parser.parse_sequence (build/cythonized/sage/misc/parser.c:5369)()
    556         if tokens.next() != EOS:
--> 557             self.parse_error(tokens)
    558         if len(all) == 1 and isinstance(all, list):

/usr/local/sage-P3-2/local/lib/python3.7/site-packages/sage/misc/parser.pyx in sage.misc.parser.Parser.parse_error (build/cythonized/sage/misc/parser.c:9742)()
   1007     cdef parse_error(self, Tokenizer tokens, msg="Malformed expression"):
-> 1008         raise SyntaxError(msg, tokens.s, tokens.pos)
   1009 

SyntaxError: Malformed expression

During handling of the above exception, another exception occurred:

NotImplementedError                       Traceback (most recent call last)
<ipython-input-22-617e71e52902> in <module>()
----> 1 integrate(Ex, x, algorithm="giac")

/usr/local/sage-P3-2/local/lib/python3.7/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/local/sage-P3-2/local/lib/python3.7/site-packages/sage/symbolic/expression.pyx in sage.symbolic.expression.Expression.integral (build/cythonized/sage/symbolic/expression.cpp:64575)()
  12389                     R = ring.SR
  12390             return R(integral(f, v, a, b, **kwds))
> 12391         return integral(self, *args, **kwds)
  12392 
  12393     integrate = integral

/usr/local/sage-P3-2/local/lib/python3.7/site-packages/sage/symbolic/integration/integral.py in integrate(expression, v, a, b, algorithm, hold)
    925         if not integrator:
    926             raise ValueError("Unknown algorithm: %s" % algorithm)
--> 927         return integrator(expression, v, a, b)
    928     if a is None:
    929         return indefinite_integral(expression, v, hold=hold)

/usr/local/sage-P3-2/local/lib/python3.7/site-packages/sage/symbolic/integration/external.py in giac_integrator(expression, v, a, b)
    430         return expression.integrate(v, a, b, hold=True)
    431     else:
--> 432         return result._sage_()

/usr/local/sage-P3-2/local/lib/python3.7/site-packages/sage/interfaces/giac.py in _sage_(self, locals)
   1102 
   1103             except Exception:
-> 1104                 raise NotImplementedError("Unable to parse Giac output: %s" % result)
   1105         else:
   1106             return [entry.sage() for entry in self]

NotImplementedError: Unable to parse Giac output: Evaluation time: 2.82
12*(1/4*ln(abs((-2*x^(1/3)+1)^(1/4)-1))-1/4*ln((-2*x^(1/3)+1)^(1/4)+1)+1/2*atan((-2*x^(1/3)+1)^(1/4))+1/3*((-2*x^(1/3)+1)^(1/4))^3)

sage: from giacpy_sage import *
// Giac share root-directory:/usr/local/sage-P3-2/local/share/giac/
// Giac share root-directory:/usr/local/sage-P3-2/local/share/giac/
Help file /usr/local/sage-P3-2/local/share/giac/doc/fr/aide_cas not found
Added 0 synonyms
sage: libgiac.integrate(Ex,x).sage()
4*(-2*x^(1/3) + 1)^(3/4) + 6*arctan((-2*x^(1/3) + 1)^(1/4)) - 3*log((-2*x^(1/3) + 1)^(1/4) + 1) + 3*log(abs((-2*x^(1/3) + 1)^(1/4) - 1))