Problem 3.20 For the circuit in Fig. 3.69, find v1, v2, and v3 using nodal analysis. Figure 3.69 For Prob. 3.20.
Problem 3.59 Using mesh analysis, find vo and io in the circuit of Fig. 3.79. Figure 3.79 For Prob. 3.30.
Problem 3.31 Find the node voltages for the circuit in Fig. 3.80. Figure 3.80 For Prob. 3.31.