Can someone help me with this error? I have a feeling there is something
silly I'm missing in the syntax. Thanks!
(%i1) rk(['R(t)+'J(t),'R(t)+'J(t)],['R(t),'J(t)],[1,1],[t,0,10,0.1]);
define: in definition of f_rk_4, found bad argument 'R(t)
#0:
rk(odes=['R(t)+'J(t),'R(t)+'J(t)],state=['R(t),'J(t)],initial=[1,1],domain=[t,0,10,0.1])
#1: rk(?_l=[['R(t)+'J(t),'R(t)+'J(t)],['R(t),'J(t)],[1,1],[t,0,10,0.1]])
-- an error. To debug this try: debugmode(true);