by Ratch » Sat Jan 10, 2015 3:37 am
tknot,
The v2 and v4 node is a natural reference. Why is that same node marked with two different names? Why is the node at the connection of the 3 volt and 5 volts supply set to 0 volts? How do you know that? The 10 ohm resistor in parallel with the 3 volts supply doesn't change any voltages or currents in the circuit. It just puts a load on the 3 volt supply. Remove it and do the calculations.
So, take a cut at solving and post your equations. Solve for nodes v1 and v3.
Ratch