that we discussed in class. -a e.S.I dt IP dt !3! dR dt S(0) = 995, 1(0) = 5, and R(0) 0. Try different values for the parameters a, c and 7, while keeping the initial conditions fixed. Figure out...

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Extracted text: that we discussed in class. -a e.S.I dt IP dt !3! dR dt S(0) = 995, 1(0) = 5, and R(0) 0. Try different values for the parameters a, c and 7, while keeping the initial conditions fixed. Figure out what the relationship should be between a,c and y to avoid an epidemic. Here epidemic means that the mumber of infectious individuals increases at the outset. Describe how change in these three parameters affects the dynamics (when we see an epidemic and when we do not).