Solving system of ODE

[woeiken]

I would like to solve systems of ODE of at least 2nd order and above. I know in the mathcad help, there are references on solving systems of ODE up to the first order only. I understand how it works, but still couldn't figure out what to do if there is 2nd derivative in the system. Could somebody tell me how to do it?

Thanks alot!!

 

[jghrist]

See

http://www.mathcad.com/library/ebooks/odesolve_toc.asp