Before revision: The complete set of equations for this circuit is: By substituting V1 to the first equation and solving in respect to V2, we get: Matrix form for the node-voltage equation In general, for a circuit with nodes, the node-voltage equations obtained by nodal analysis can be written in a matrix form as derived in the following.
After revision: The complete set of equations for this circuit is: By substituting Matrix form for the node-voltage equation In general, for a circuit with nodes, the node-voltage equations obtained by nodal analysis can be written in a matrix form as derived in the following.