I've made 2 examples with same parameters and just changing from rkf45 to rk4.

Fortunately I already found what I needed, however, I would like to see printed out as result on screen the value for the last x-value, which is the one I'm interested the most. Most likely this is really basic question but my contact with Maple has less than 24h.

RK4.mw

RK45.mw

@Rouben Rostamian

Thanks a lot for the help. Since I posted the question I've been trying some "play around" to get familiar with and in fact, some of it already makes sense. Nevertheless, much appreciate your input. Got me out of a huge headache!