Direct method for solving nonlinear two-dimensional Volterra-Fredholm integro-differential equations by block-pulse functions
محورهای موضوعی : International Journal of Information, Security and Systems ManagementElnaz Poorfattah 1 , Akbar Jafari Shaerlar 2
1 - Department of Mathematics, Ardabil Science and Research Branch, Islamic Azad University, Ardabil, Iran
2 - Department of Mathematics, Ardabil Science and Research Branch, Islamic Azad University, Ardabil, Iran
کلید واژه: Nonlinear equations, Two-dimensional Volterra-Fredholm integro-differential equations, Two-dimensional block-pulse functions, operational matrix,
چکیده مقاله :
In this paper, an effective numerical method is introduced for the treatment of nonlinear two-dimensional Volterra-Fredholm integro-differential equations. Here, we use the so-called two-dimensional block-pulse functions.First, the two-dimensional block-pulse operational matrix of integration and differentiation has been presented. Then, by using this matrices, the nonlinear two-dimensional Volterra-Fredholm integro-differential equation has been reduced to an algebraic system. Some numerical examples are presented to illustrate the effectiveness and accuracy of the method
