Question 1.P.32: If the reduced incidence matrix network is given as A = [ -1......

\begin{aligned} & A^{ T }=\left[\begin{array}{rrrrrr} -1 & 0 & 0 & 1 & 1 & 0 \\ 0 & 1 & -1 & -1 & 0 & 0 \\ 0 & 0 & 1 & 0 & -1 & 1 \end{array}\right]\left[\begin{array}{rrr} -1 & 0 & 0 \\ 0 & 1 & 0 \\ 0 & -1 & 0 \\ 1 & -1 & 0 \\ 1 & 0 & -1 \\ 0 & 0 & 1 \end{array}\right] \\ &=\left[\begin{array}{rrr} 3 & -1 & -1 \\ -1 & 3 & -1 \\ -1 & -1 & 3 \end{array}\right] \end{aligned}