We need differential equations for modeling and analyzing a huge amount of issues. Fractional calculus is a branch of mathematical analysis that is used in many fields of mathematical and engineering sciences such as electrical networks, fluid mechanics, control theory, electromagnetism, biology, chemistry, propagation and viscoelasticity. The most important topics in mathematics are differential equations and integral equations which are very practical and have a special place in various sciences, especially engineering sciences. We used approximate methods to obtain the results because we cannot use analytical clustering for this kind of equations. The aim of this paper is to investigate the operational matrix in order to solve the partial differential equation.

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