CircuitoRC
Xander
Solve IVP for voltage in RC Circuit

dv/dt=(-1/RC) v + (1/RC) u
v(0)=0

numerically:
dv/dt=(-1/0.6) v + (1/0.6) u

The diagram consist in:
a=(-1/0.6)*[v]
b= (1/0.6)*[u]

dv/dt=[a] + [b]