1. The problem statement, all variables and given/known data We are told to analyse the circuit in the diagram (ignore the texts) with the method of node voltages. Here is the answer: 2. Relevant equations Kirchhoff's Current Law Kirchhoff's Voltage Law 3. The attempt at a solution So far, all I have been able to get is the equation described by the top line of the matrix relation. However, there is no 0 by the resistance! Worse, the bottom equation looks to me like (1-alpha)*v_2. And I have no idea where v_2 is even defined, or how this is a valid KCL equation without the value or R_2 anywhere.... Thank you in advance for any help!