**spring_double_ode_test**,
a MATLAB code which
calls spring_double_ode(), which
sets up a system of ordinary differential equations (ODE) for
a system in which a mass is connected by a spring to a mass
connected by a spring to a fixed support.

spring_double_ode, a MATLAB code which sets up a system of ordinary differential equations (ODE) for a system in which a mass is connected by a spring to a mass connected by a spring to a fixed support.

- spring_double_ode_test.m, calls all the tests.
- spring_double_ode_test.sh, runs all the tests.
- spring_double_ode_test.txt, the output file.

- spring_double_ode23.m, uses ode23() to solve the problem.
- spring_double_ode23.png, a plot of the displacements over time.