1. The problem statement, all variables and given/known data http://img126.imageshack.us/img126/6400/picex8.jpg" [Broken] Determine the maximum power that can be delievered to the varaible resistor R in the circuit of Fig 4.139. 2. Relevant equations 3. The attempt at a solution I am not sure how to handle this because the resistor is in that diamond structure. I need to find V thev and R thev Any advice or a hint to get started?