stetter_ode, a Python code which sets up and solves an ordinary differential equation (ODE) for which a specific time step sequence causes the implicit trapezoidal method to be unstable, while the implicit midpoint method will be stable. The right hand side function f(t,y) is periodic, discontinuous, and piecewise linear.
The computer code and data files described and made available on this web page are distributed under the GNU LGPL license.
stetter_ode is available in a MATLAB version and an Octave version and a Python version.
python_ode, Python codes which sets up various systems of ordinary differential equations (ODE).