simult is used to solve a linear system of equations (resp. several linear systems of equations with the same matrix A) written in matrix form (see also 2.31.17) :
simult takes as arguments the matrix A of the system and the
column vector (i.e. a one column matrix) b of the second
member of the system (resp.
the matrix B whose columns are the
vectors b of the second members of the different systems).
The result is a column vector, solution of the system (resp. a matrix whose columns are the solutions of the different systems).
For example, to solve the system :
Hence x=−2 and y=4 is the solution.
Hence x=−2 and y=4 is the solution of
whereas x=0 and y=1 is the solution of