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# sympy.integrals.prde.prde_spde

All Samples(4)  |  Call(2)  |  Derive(0)  |  Import(2)

```"""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,
```
```def test_prde_spde():
D = [Poly(x, t), Poly(-x*t, t)]
DE = DifferentialExtension(extension={'D': [Poly(1, x), Poly(1/x, t)]})
# TODO: when bound_degree() can handle this, test degree bound from that too
assert prde_spde(Poly(t, t), Poly(-1/x, t), D, n, DE) == \
```

```"""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,
```
```def test_prde_spde():
D = [Poly(x, t), Poly(-x*t, t)]
DE = DifferentialExtension(extension={'D': [Poly(1, x), Poly(1/x, t)]})
# TODO: when bound_degree() can handle this, test degree bound from that too
assert prde_spde(Poly(t, t), Poly(-1/x, t), D, n, DE) == \
```