Maxima Function
augcoefmatrix ([eqn_1, ..., eqn_m], [x_1, ..., x_n])
Returns the augmented coefficient matrix for the variables x_1, ..., x_n of the system of linear equations eqn_1, ..., eqn_m. This is the coefficient matrix with a column adjoined for the constant terms in each equation (i.e., those terms not dependent upon x_1, ..., x_n).
(%i1) m: [2*x - (a - 1)*y = 5*b, c + b*y + a*x = 0]$ (%i2) augcoefmatrix (m, [x, y]); [ 2 1 - a - 5 b ] (%o2) [ ] [ a b c ]