E. Fathizadeh - Department of Mathematics, Karaj Branch, Islamic Azad University, Karaj, Iran.

In the present paper, a computational technique isproposed to solve the population growth model (PGM).For this purpose, the operational matrix of fractionalintegral (OMFI) was used for cosine and sine wavelets(CASWs). One of the advantages of the proposed methodis that we can turn such problems into a solution a systemof algebraic equations, which is simple to solve.Finally, numerical solution of presented model and acomparison with two other methods are presented to showthe validity and efficiency of the technique, and also erroranalysis is provided for this procedure.

Fractional differential equations(FDEs)population growth model(PGM)CAS waveletsBlock Pulse Functions(BPFs).