A Nonstandard Finite Difference Scheme For Solving‎ ‎Fractional-Order Model of Hiv-1 Infection Of‎ ‎Cd4^+ T-Cells

‎in this paper‎, ‎we introduce fractional-order into a model of hiv-1 infection of cd4^+ t--cells‎. ‎we study the effect of ‎the changing the average number of viral particles $n$ with different sets of initial conditions on the dynamics of‎ ‎the presented model‎. ‎ ‎the nonstandard finite difference (nsfd) scheme is implemented‎ ‎to study the dynamic behaviors in the fractional--order hiv-1‎‎infection model.‎ ‎ ‎numerical results show that the‎‎nsfd approach is easy to be implemented and accurated when applied to fractional-order hiv-1‎‎infection model.