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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,
    u = Matrix([(x + 1)/(x - 1), x + 1, 0])
    DE = DifferentialExtension(extension={'D': [Poly(1, x)]})
    assert constant_system(A, u, DE) == \
        (Matrix([[1, 0, 0],
                 [0, 1, 0],

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,
    u = Matrix([(x + 1)/(x - 1), x + 1, 0])
    DE = DifferentialExtension(extension={'D': [Poly(1, x)]})
    assert constant_system(A, u, DE) == \
        (Matrix([[1, 0, 0],
                 [0, 1, 0],