Solve for (i):
Use nodal analysis to find (v_1) and (v_2) in the circuit of Fig. 3.73.
[v = 10i]
[\frac{v_1}{2} + \frac{v_1 - v_2}{4} = 0]
[V_{oc} = 12 \text{ V}]
[30i = 30]
[v_1 = 4 \text{ V}, v_2 = 2 \text{ V}] Problem 4.12