Fitted numerical method for singularly perturbed semilinear three-point boundary value problem

سال انتشار: 1401
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 114

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شناسه ملی سند علمی:

JR_IJNAO-12-1_007

تاریخ نمایه سازی: 21 فروردین 1401

چکیده مقاله:

We consider a class of singularly perturbed semilinear three-point boundary value problems. An accelerated uniformly convergent numerical method is constructed via the exponential fitted operator method using Richardson extrapolation techniques to solve the problem. To treat the semilinear term, we use quasi-linearization techniques. The numerical results are tabulated in terms of maximum absolute errors and rate of convergence, and it is observed that the present method is more accurate and ε-uniformly convergent for h ≥ ε, where the classical numerical methods fail to give a good result. It also improves the results of the methods existing in the literature. The method is shown to be second-order convergent independent of perturbation parameter ε.

نویسندگان

M. Gebeyehu

Department of Mathematics, College of Natural Sciences,Jimma university, Jimma, Ethiopia.

H. Garoma

Department of Mathematics, College of Natural Sciences,Jimma university, Jimma, Ethiopia.

A. Deressa

Department of Mathematics, College of Natural Sciences,Jimma university, Jimma, Ethiopia.

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