first of all, thank you for ur help.
can u explain to me this line the code u wrote:
solB = m[t] /. NDSolve[sysB, m[t], {t, 0, 50}]
what exactly is being signed to solB? if i want to plot for m'[t] , how do i do it?
and what exactly the /. does?
when i wrote my code i simply used examples i...