How many network models when solve the system of eqs?

[Runfa-Zhang]

like example

How many network model when solve the system of eqs?
one network model to 3 output $u1, u2$ and $u3$ as follows Fig?（please wait for loading fig）

or 3 network models to $u1, u2$ and $u3$ respectively as follows Fig?（please wait for loading fig）

[killah-t-cell]

If your chain has 3 networks then it has 3 models.

[Runfa-Zhang]

If your chain has 3 networks then it has 3 models.

#Thanks very much！