A. K. M. Selim Reza

Work place: Department of Mathematics, Khulna University of Engineering and Technology, Bangladesh

E-mail: selim_1992@yahoo.com


Research Interests: Mathematics, Mathematics of Computing, Computational Mathematics


K. M. Selim Reza was born in Bangladesh. He has completed B S (Honor’s) and M S in Mathematics from University of Dhaka. Now he is performing as a Lecturer of Mathematics at Department of Mathematics in Khulna University of Engineering and Technology, Bangladesh

Author Articles
Numerical Double Integration for Unequal Data Spaces

By Md. Nayan Dhali Nandita Barman Md. Mohedul Hasan A. K. M. Selim Reza

DOI: https://doi.org/10.5815/ijmsc.2020.06.04, Pub. Date: 8 Dec. 2020

Numerical integral is one of the mathematical branches that connect between analytical mathematics and computer. Numerical integration is a primary tool used by engineers and scientists to obtain an approximate result for definite integrals that cannot be solved analytically. Numerical double integration is widely used in calculating surface area, the intrinsic limitations of flat surfaces and finding the volume under the surface. A wide range of method is applied to solve numerical double integration for equal data space but the difficulty is arisen when the data values are not equal.  In this paper we have tried to generate a mathematical formula of numerical double integration for unequal data spaces. Trapezoidal rule for unequal space is used to evaluate the formula. We also verified our proposed model by demonstrating some numerical examples and compared the numerical result with the analytical result.

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