Rectangular shapes is meant by the word 'regular'.
Jacobi iterative method for solving systems of equations using 9-point approximation. Successive Overrelaxation method using an optimum S.O.R. factor using 9- point approximation. Successive Overrelaxation method using an optimum S.O.R. factor using 5- point approximation. Successive Overrelaxation method using an optimum S.O.R. factor using 5- point approximation.