a) Show that the node equations in the variables V iet) and V2(t) for the circuit above are b) Show that state equations in the variables va(t) and Vb(t) are c) Draw an actual circuit diagram...

a) Show that the node equations in the variables V iet) and V2(t) for the circuit above are

b) Show that state equations in the variables va(t) and Vb(t) are

c) Draw an actual circuit diagram employing an op-amp and appropriate other elements which would have the incremental equivalent circuit shown above.