quadex_ode, a MATLAB code which sets up and solves a stiff ordinary differential equation (ODE), whose exact solution is a parabola, but for which errors grow exponentially.


The computer code and data files described and made available on this web page are distributed under the GNU LGPL license.


quadex_ode is available in a MATLAB version and an Octave version and a Python version.

Related Data and codes:


matlab_ode, MATLAB codes which set up various ordinary differential equations (ODE).


  1. Charles Curtiss, Joseph Hirschfelder,
    Integration of Stiff Equations,
    Proceedings of the National Academy of Science, USA,
    Volume 38, Number 3, pages 235-243, March 1952.

Source Code:

Last revised on 24 April 2021.