Hi,
I would expect this to work:
sage: e = integrate(sqrt(x**3+1), x, 2, 10)
sage: e.n()
---------------------------------------------------------------------------
TypeError Traceback (most recent call last)
/home/ondrej/<ipython console> in <module>()
/home/ondrej/ext/sage-3.4.1.alpha0/local/lib/python2.5/site-packages/sage/calculus/calculus.pyc
in numerical_approx(self, prec, digits)
1514 except TypeError:
1515 # try to return a complex result
-> 1516 approx = self._complex_mpfr_field_(ComplexField(prec))
1517
1518 return approx
/home/ondrej/ext/sage-3.4.1.alpha0/local/lib/python2.5/site-packages/sage/calculus/calculus.pyc
in _complex_mpfr_field_(self, field)
1748
1749 def _complex_mpfr_field_(self, field):
-> 1750 raise TypeError
1751
1752 def _complex_double_(self, C):
TypeError:
am I doing it the wrong way? With sympy:
sage: from sympy import var, integrate
sage: var("x")
x
sage: e = integrate(sqrt(x**3+1), (x, 2, 10))
sage: e.n()
124.616199194723
Ondrej
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