University of Mazandaran Iran, Islamic Republic of
The introduced method in this study consists of reducing a system of
infinite boundary integro-differential equations (IBI-DE) into a system of al-
gebraic equations, by expanding the unknown functions, as a series in terms
of Laguerre polynomials with unknown coefficients. Properties of these polynomials and operational matrix of integration are rst presented. Finally, two examples illustrate the simplicity and the effectiveness of the proposed method have been presented.
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