Rational methods for solving first-order initial value problems
In this paper, a class of rational methods of second to fourth order of accuracy are presented. The methods are developed by considering the concept of the closest points of approximation in its formulas. These methods require the application of a suitable method to calculate the starting approximat...
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Published in | International journal of computer mathematics Vol. 98; no. 2; pp. 252 - 270 |
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Main Authors | , |
Format | Journal Article |
Language | English |
Published |
Abingdon
Taylor & Francis
01.02.2021
Taylor & Francis Ltd |
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Online Access | Get full text |
ISSN | 0020-7160 1029-0265 |
DOI | 10.1080/00207160.2020.1737862 |
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Abstract | In this paper, a class of rational methods of second to fourth order of accuracy are presented. The methods are developed by considering the concept of the closest points of approximation in its formulas. These methods require the application of a suitable method to calculate the starting approximation values as they are not self-starting, as well as higher derivatives of the problems. The illustrated region of absolute stability presented in the article shows that the rational schemes are all A-stable. The methods are tested on several initial value problems including systems of differential equations. From the numerical results, it appears that the proposed methods are comparable to some of the existing methods in terms of accuracy and efficiency. The capability of the schemes in solving problems whose solution possesses singularity and singularly perturbed problem can be obviously seen as they are compared to the existing rational multistep methods. The methods also show its reliability in solving stiff problems. Besides that, the schemes are tested on the Van der Pol's equation, which usually arises in physics and chemical reactions. The presented numerical solutions show that the proposed methods are comparably accurate to the existing methods. |
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AbstractList | In this paper, a class of rational methods of second to fourth order of accuracy are presented. The methods are developed by considering the concept of the closest points of approximation in its formulas. These methods require the application of a suitable method to calculate the starting approximation values as they are not self-starting, as well as higher derivatives of the problems. The illustrated region of absolute stability presented in the article shows that the rational schemes are all A-stable. The methods are tested on several initial value problems including systems of differential equations. From the numerical results, it appears that the proposed methods are comparable to some of the existing methods in terms of accuracy and efficiency. The capability of the schemes in solving problems whose solution possesses singularity and singularly perturbed problem can be obviously seen as they are compared to the existing rational multistep methods. The methods also show its reliability in solving stiff problems. Besides that, the schemes are tested on the Van der Pol's equation, which usually arises in physics and chemical reactions. The presented numerical solutions show that the proposed methods are comparably accurate to the existing methods. |
Author | Majid, Z. A. Fairuz, A. N. |
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Cites_doi | 10.1063/1.4801126 10.1155/2014/565137 10.1016/j.amc.2006.11.134 10.1007/s11075-016-0209-5 10.1016/j.amc.2015.06.119 10.1016/0898-1221(82)90046-3 10.1016/S0898-1221(00)00319-9 10.1016/0898-1221(88)90259-3 10.1016/0898-1221(87)90004-6 10.1016/0771-050X(76)90036-X 10.1016/0898-1221(86)90235-X |
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SubjectTerms | Approximation Boundary value problems Chemical reactions Differential equations Problem solving Problem whose solutions possesses singularity rational method singularly perturbed problem stiff problem system of differential equations Van der Pol's equation |
Title | Rational methods for solving first-order initial value problems |
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