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renegarcia/test_ode_solver_sympy.py

Created February 5, 2018 17:49
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How to test the solution to an ordinary differential equation found with sympy.
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test_ode_solver_sympy.py
'''
How to test a ODE in sympy properly.
See [http://docs.sympy.org/latest/modules/solvers/ode.html#checkodesol] for more
'''
import sympy as sp
x, h = sp.symbols('x h')
eq = sp.diff(h(x), x) - h(x)
sols = sp.dsolve(eq)
sol = sols.rhs
print(sp.checkodesol(eq, sol))
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