i want to Matlab programm for fourth order Runge Kutta method for coupled system of differential equation

i want the rk method ode for the attach file.explain each and every step of code.

[James Tursa]

Using ode45? Or do you have to write the RK4 DE integrator yourself? See this link:

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