Question: Runge-Kutta 4th order

Hi all!
I'm totally new using Maple (just installed right now) and need to solve this ODE using Runge-Kutta 4th order scheme. I found there's an inbuilt function for it but I just don't know how to use it.

Can anyone please help me out with this? I'm a bit in a rush and don't have too much time for trial and errors approach.

Much appreciate any help.

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