Solution of the tumor-immune system by differential transform method

In this paper, differential transform method (DTM) is presented to solve Tumor-immune system at two initial conditions where two different cases of the interaction between tumor cells and effector cells. The system is presented to show the ability of the method for non-linear systems of differential equations. By using small iteration, the results of DTM are near the results of Runge-Kutta fourth-fifth order method (ode45 solver in MATLAB) and better than the results of Runge-Kutta second-third order method (ode23 solver in MATLAB). Also, the residual error of DTM’s solutions approach zero. Therefore, DTM’s solutions approximate exact solutions. Finally, we conclude formulae that we can find DTM’s solutions, better than the results of RungeKutta second-third order method, in any interval we need.