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JOURNALS // Zhurnal Vychislitel'noi Matematiki i Matematicheskoi Fiziki // Archive

Zh. Vychisl. Mat. Mat. Fiz., 2021 Volume 61, Number 8, Pages 1269–1277 (Mi zvmmf11274)

Ordinary differential equations

Approximate solution of nonlinear differential equations with the help of rational spline functions

V. G. Magomedovaa, A.-R. K. Ramazanovab

a Dagestan State University, 367000, Makhachkala, Dagestan, Russia
b Daghestan Scientific Centre of Russian Academy of Sciences, Makhachkala

Abstract: A method for constructing an approximate solution in the form of a rational spline function is proposed for initial value problems in the case of first- and second-order differential equations solvable for the highest derivative. A spline function of this type is constructed via the transition to a system of scalar equations that is reduced to solving at most one nonlinear equation with one unknown and to making sequential substitutions of previously determined values.

Key words: rational spline functions, interpolation spline functions, approximate solution of differential equations.

UDC: 519.65

Received: 07.08.2020
Revised: 08.11.2020
Accepted: 11.02.2021

DOI: 10.31857/S0044466921080044


 English version:
Computational Mathematics and Mathematical Physics, 2021, 61:8, 1252–1259

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© Steklov Math. Inst. of RAS, 2024