Hi guys and girls, Ive got the following homework question ( i dont want answers just some help) The drawing is attached but in case it doesn't work its a 2 port network with a 5 ohm resistor connected to each input and ground (in star fashion). The question is, for the given z parameters for the 2 port network and with each resistor being 5 ohms show the whole circuit as a z parameter matrix. My ideas on how to go about this As a t network can be mapped as a 2 port network possibly its a configuration of 2 2port networks eg parallel parallel but im not sure how that would work as one network is literally inside the other. Or do i just take the z parameter matrix and multiply by needed co efficients to take into account the series resistances for instance the input resistance would be as it is now + 5 ohm and v1 and v2 would be as they are now plus a voltage gained by inserting a 5 ohm resistor between the network and ground?? Please help im totally lost on this one!