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src/s/y/sympy-0.7.5/sympy/integrals/tests/test_prde.py   sympy(Download)
"""Most of these tests come from the examples in Bronstein's book."""
from sympy import Poly, Matrix, S, symbols, I
from sympy.integrals.risch import DifferentialExtension
from sympy.integrals.prde import (prde_normal_denom, prde_special_denom,
    prde_linear_constraints, constant_system, prde_spde, prde_no_cancel_b_large,
    fd = Poly(x, t)
    G = [(Poly(t, t), Poly(1 + t**2, t)), (Poly(1, t), Poly(x + x*t**2, t))]
    assert prde_normal_denom(fa, fd, G, DE) == \
        (Poly(x, t), (Poly(1, t), Poly(1, t)), [(Poly(x*t, t),
         Poly(t**2 + 1, t)), (Poly(1, t), Poly(t**2 + 1, t))], Poly(1, t))
    G = [(Poly(t, t), Poly(t**2 + 2*t + 1, t)), (Poly(x*t, t),
        Poly(t**2 + 2*t + 1, t)), (Poly(x*t**2, t), Poly(t**2 + 2*t + 1, t))]
    DE = DifferentialExtension(extension={'D': [Poly(1, x), Poly(t, t)]})
    assert prde_normal_denom(Poly(x, t), Poly(1, t), G, DE) == \

src/s/y/sympy-HEAD/sympy/integrals/tests/test_prde.py   sympy(Download)
"""Most of these tests come from the examples in Bronstein's book."""
from sympy import Poly, Matrix, S, symbols, I
from sympy.integrals.risch import DifferentialExtension
from sympy.integrals.prde import (prde_normal_denom, prde_special_denom,
    prde_linear_constraints, constant_system, prde_spde, prde_no_cancel_b_large,
    fd = Poly(x, t)
    G = [(Poly(t, t), Poly(1 + t**2, t)), (Poly(1, t), Poly(x + x*t**2, t))]
    assert prde_normal_denom(fa, fd, G, DE) == \
        (Poly(x, t), (Poly(1, t), Poly(1, t)), [(Poly(x*t, t),
         Poly(t**2 + 1, t)), (Poly(1, t), Poly(t**2 + 1, t))], Poly(1, t))
    G = [(Poly(t, t), Poly(t**2 + 2*t + 1, t)), (Poly(x*t, t),
        Poly(t**2 + 2*t + 1, t)), (Poly(x*t**2, t), Poly(t**2 + 2*t + 1, t))]
    DE = DifferentialExtension(extension={'D': [Poly(1, x), Poly(t, t)]})
    assert prde_normal_denom(Poly(x, t), Poly(1, t), G, DE) == \