# Index of /2.003/www/lect4

Name Last modified Size Description

Parent Directory 06-Dec-2005 11:18 -
f1.m 07-Oct-2005 14:40 1k
f2.m 07-Oct-2005 14:40 1k
f3.m 07-Oct-2005 14:40 1k
f4.m 07-Oct-2005 14:40 1k
f5.m 07-Oct-2005 14:40 1k
traj1.m 07-Oct-2005 14:40 1k
traj2.m 07-Oct-2005 14:40 1k
traj3.m 07-Oct-2005 14:40 1k
traj4.m 07-Oct-2005 14:40 1k
traj5.m 07-Oct-2005 15:06 1k

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*** README file for Lectures 4 and 5: ODE solving techniques in Matlab
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In this directory, you will find 5 functions (f1...f5), and 5 corrsponding scripts (traj1....traj5).
- traj1 calls the ode solver (ode45) to solve a simple 1st order ODE (finds the velocity of a mass with friction). The ode45 solver uses the derivative found in f1.
- traj2 calls the ode solver (ode45) to solve a simple 2nd order ODE (finds the position and velocity of a damped pendulum). The ode45 solver uses the derivative found in f2.
- traj3 does the same, with a sinusoidal force applied to the pendulum. The ode45 solver uses the derivative found in f3.
- traj4 does the same, but you can now choose what force is applied to the pendulum, using an inline function. The ode45 solver uses the derivative found in f4.
- traj5 solves for the position and velocity of 2 masses coupled by springs. The ode45 solver uses the derivative found in f5.
Enjoy, and feel free to experiment with these scripts.