Olusola Ezekiel ABOLARIN, Bamikole Gbenga OGUNWARE, John Olusola KUBOYE, Emmanuel Oluseye ADEYEFA

New Efficient Numerical Model for Solving Second, Third and Fourth Order Ordinary Differential Equations Directly

This article presents a two-step hybrid linear multistep block method for solving second, third and fourth order initial value problems of ordinary differential equations directly. The derivation of the method was done using collocation and interpolation techniques while approximated power series was used as an interpolating polynomial. The fourth derivative of the power series is collocated at the entire grid and off grid points while the fifth and sixth derivatives of the polynomial are collocated at the end point only. The basic properties of the developed method, that is, order, error constant, zero stability, region of absolute stability, convergence and consistence of the method are properly investigated. The numerical results demonstrated that the scheme developed handles second, third and fourth order ordinary differential equations efficiently and also better in accuracy when compared with existing methods. The proposed method takes away the burden of developing separate method for the solution of second, third and fourth order initial value problem of ordinary differential equations.

Keywords:

Hybrid Block Method, Collocation , interpolation, Higher Order Ordinary Differential Equations, Power Series,

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