Examples of Higher Order Systems of Differential Equations?

Greetings.I am trying to find examples of systems of linear higehr order differential equations.That is, systems in the form; Α Χ'''(t) +B X''(t) + C X'(t) + DX(t) = U(t)orΑ Χ'''(t) +B X''(t) + C...

10 October 2015 1,399 23 View