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src/s/y/sympy-0.7.5/sympy/integrals/risch.py   sympy(Download)
    or p - Dq does not have an elementary integral over k(t) if b is False.
    """
    from sympy.integrals.rde import rischDE
 
    t1 = DE.t
            iDta, iDtd = frac_in(iDt, DE.t, field=True)
            try:
                va, vd = rischDE(iDta, iDtd, Poly(aa, DE.t), Poly(ad, DE.t), DE)
                va, vd = frac_in((va, vd), t1)
            except NonElementaryIntegralException:

src/s/y/sympy-HEAD/sympy/integrals/risch.py   sympy(Download)
    or p - Dq does not have an elementary integral over k(t) if b is False.
    """
    from sympy.integrals.rde import rischDE
 
    t1 = DE.t
            iDta, iDtd = frac_in(iDt, DE.t, field=True)
            try:
                va, vd = rischDE(iDta, iDtd, Poly(aa, DE.t), Poly(ad, DE.t), DE)
                va, vd = frac_in((va, vd), t1)
            except NonElementaryIntegralException:

src/s/y/sympy-0.7.5/sympy/integrals/tests/test_rde.py   sympy(Download)
"""Most of these tests come from the examples in Bronstein's book."""
from sympy import Poly, S, symbols, oo, I
from sympy.integrals.risch import (DifferentialExtension,
    NonElementaryIntegralException)
from sympy.integrals.rde import (order_at, order_at_oo, weak_normalizer,
def test_rischDE():
    # TODO: Add more tests for rischDE, including ones from the text
    DE = DifferentialExtension(extension={'D': [Poly(1, x), Poly(t, t)]})
    DE.decrement_level()
    assert rischDE(Poly(-2*x, x), Poly(1, x), Poly(1 - 2*x - 2*x**2, x),

src/s/y/sympy-HEAD/sympy/integrals/tests/test_rde.py   sympy(Download)
"""Most of these tests come from the examples in Bronstein's book."""
from sympy import Poly, S, symbols, oo, I
from sympy.integrals.risch import (DifferentialExtension,
    NonElementaryIntegralException)
from sympy.integrals.rde import (order_at, order_at_oo, weak_normalizer,
def test_rischDE():
    # TODO: Add more tests for rischDE, including ones from the text
    DE = DifferentialExtension(extension={'D': [Poly(1, x), Poly(t, t)]})
    DE.decrement_level()
    assert rischDE(Poly(-2*x, x), Poly(1, x), Poly(1 - 2*x - 2*x**2, x),