Document Type : Research Paper
Young Researchers and Elite Club, Tabriz Branch, Islamic Azad University, Tabriz, Iran.
Department of Computer engineering, Tabriz Branch, Islamic Azad University, Tabriz, Iran.
In the linear system Ax = b the points x are sometimes constrained to lie in a given subspace S of column space of A. Drazin inverse for any singular or nonsingular matrix, exist and is unique. In this paper, the singular consistent or inconsistent constrained linear systems are introduced and the effect of Drazin inverse in solving such systems is investigated. Constrained linear system arise in electrical network theory.