Comparative Analysis of Numerical Solution to a Linear System of Algebraic Equations
International Journal of Systems Science and Applied Mathematics
Volume 1, Issue 4, November 2016, Pages: 50-57
Received: Sep. 28, 2016; Accepted: Oct. 9, 2016; Published: Oct. 31, 2016
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Aliyu Bhar Kisabo, Center for Space Transport & Propulsion, Instrumentation & Control Department Epe, Nigeria
Aliyu Adebimpe Funmilayo, Center for Space Transport & Propulsion, Instrumentation & Control Department Epe, Nigeria
Major Kwentoh Augustine Okey, Hedquarters Nigerian Army Corps of Electrical and Mechanical Engineers Bonny Cantonment VI, Nigeria
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In engineering and science, linear systems of algebraic equations occur often as exact or approximate formulations of various problems. These types of equations are well represented in matrix form. A major challenge for researchers is the choice of algorithm to use for an appropriate solution. In this study, we choose to experiment with three algorithms for the solution to a system of linear algebraic equation. After subjecting the matrix form of the system of linear algebraic equations to the rank test, Gaussian Elimination method, Inverse Matrix Method and Row-Reduced Echelon were used to evaluate twenty-four (24) sets of solutions. Numerical methods are plagued by truncation and round-off errors thus, we choose to compute and compare result here by invoking the MATLAB command format long (15 decimal place) with format short (5 decimal place). After evaluating the required solutions, we substituted all computed results back into the system of linear algebraic equations to check if they are satisfied. Comparison of results was done on the basis of algorithm used and between the results obtained using either format long or format short values. Despite the presence of errors due to truncation and round-off, format short computed solutions gave acceptable result in some cases. Results obtained in this study proved the efficacy of the proposed technique.
Linear System of Algebraic Equations, Numerical Methods, MATLAB ®
To cite this article
Aliyu Bhar Kisabo, Aliyu Adebimpe Funmilayo, Major Kwentoh Augustine Okey, Comparative Analysis of Numerical Solution to a Linear System of Algebraic Equations, International Journal of Systems Science and Applied Mathematics. Vol. 1, No. 4, 2016, pp. 50-57. doi: 10.11648/j.ijssam.20160104.13
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This article is an open access article distributed under the Creative Commons Attribution License ( which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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