Studyind S-I model using the improved Euler method

Following work on the Introduction to SI compartmental model . We numerically solve the system with the improved Euler method program, for the same parameter values and initial conditions and for the time interval [0,200]. Draw the graphs of the solutions x (t ), and y (t ) οn the time interval [0,200] and the corresponding trajectory. We repeat the study for the case where β=1.

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