Galerkin-Bernstein Approximations for the System of Third-Order Nonlinear Boundary Value Problems  

作　　者：Snigdha Dhar Md. Shafiqul Islam Snigdha Dhar;Md. Shafiqul Islam(Department of Applied Mathematics, University of Dhaka, Dhaka, Bangladesh)

机构地区：[1]Department of Applied Mathematics, University of Dhaka, Dhaka, Bangladesh

出　　处：《Journal of Applied Mathematics and Physics》2024年第6期2083-2101,共19页应用数学与应用物理（英文）

摘　　要：This paper is devoted to find the numerical solutions of one dimensional general nonlinear system of third-order boundary value problems (BVPs) for the pair of functions using Galerkin weighted residual method. We derive mathematical formulations in matrix form, in detail, by exploiting Bernstein polynomials as basis functions. A reasonable accuracy is found when the proposed method is used on few examples. At the end of the study, a comparison is made between the approximate and exact solutions, and also with the solutions of the existing methods. Our results converge monotonically to the exact solutions. In addition, we show that the derived formulations may be applicable by reducing higher order complicated BVP into a lower order system of BVPs, and the performance of the numerical solutions is satisfactory. .This paper is devoted to find the numerical solutions of one dimensional general nonlinear system of third-order boundary value problems (BVPs) for the pair of functions using Galerkin weighted residual method. We derive mathematical formulations in matrix form, in detail, by exploiting Bernstein polynomials as basis functions. A reasonable accuracy is found when the proposed method is used on few examples. At the end of the study, a comparison is made between the approximate and exact solutions, and also with the solutions of the existing methods. Our results converge monotonically to the exact solutions. In addition, we show that the derived formulations may be applicable by reducing higher order complicated BVP into a lower order system of BVPs, and the performance of the numerical solutions is satisfactory. .

关 键 词：System of Third-Order BVP Galerkin Method Bernstein Polynomials Nonlinear BVP Higher-Order BVP 

分 类 号：O17[理学—数学]