Chapter 2 Successive Approximations
www.math.smith.edu › ~callahan › cicSuccessive Approximations In this chapter we continue exploring the mathematical implications of the S-I-R model. In the last chapter we calculated future values of S, I, and R by assuming that the rates S′, I′, and R′ stayed fixed for a whole day. Since the rates are not fixed—they change with S, I, and R—the values of S, I,