1. Augmented( incidence matrix of a directed graph nodes(N+1), branches(B)

Relationship between branch and loop currents

Let the initial voltages on the capacitors be represented as voltage sources in series with the capacitors and the initial currents through the inductors be represented as current sources in parallel with the inductors

17-3 Loop analysis 17-4 Analysis of networks containing dependent sources

The node-to-datum voltage vector:

《电路》（英文版）18-2 Simple nonlinear resistor circuits

18-4 Decomposition of a circuit into linear and nonlinear parts

Find the root of the equation(x)=0

18-7 General nonlinear resistor circuit

18-5 Combination of i-v characteristics 1. Series combination