Solving a 2nd ODE using numerical methods

Hi there,

A free-swinging pendulum with damping given by the equation:

theta''(t)+(c/m)*theta'(t)+(g/l)*sin(theta)

Given we know that c and m = 1 and l=0.5 and g = 9.81

How can I solve this as euler and huen's method.

We know the initial condition theta(0)=pi/4 and theta'(0)=0

[James Tursa]

What have you done so far? Please make an attempt and post your code, and ask specific questions about where you are having difficulties. Then we can comment on it and make suggestions.

http://www.mathworks.com/matlabcentral/answers/6200-tutorial-how-to-ask-a-question-on-answers-and-get-a-fast-answer