Question: Solve integral equation system with Maple?

Hey all,

as a newbie to Maple I would likt to solve the electrical circuit, which is attached to this post. From the theory one can derive the following 6 equations:

(A)  u[smooth](t) = -(int(i[smooth](tau), tau = 0 .. t))/C[smooth]-u[smooth](0)

(B) u[smooth](t) = R[komp]*i[komp]

(C) u[ckomp](t) = (int(i[load](tau), tau = 0 .. t))/C[komp]-(-u[ckomp](0))

(D) u[loadt](t) = R[load]*i[load]

(E) u[smooth](t) = u[ckomp](t)-u[load](t)

(F) i[komp](t) = i[smooth](t)-i[load](t)

My aim is tio get either the voltage u[load](t) or the current i[load](t). Beside all parameter values I know the inital voltages at the capacities, called u[smooth](t=0) and u[ckomp](t=0). Both values are not zero in general!!!!

Do you have any idea how I can solve this with Maple? First I habe tried to solve this with "solve()" but get a solution with "solve()", I need to derive the equations to get rid of the integrals. But through the derivation my initial condictions vanish, too.
I have attached my Maple worrksheet as well: igl.mwigl.mw

BR

 Sebastian

P.S.: Here is the circuit: