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The SIR model has many equilibria.
1) To find the equilibria, why is it not necessary to find when ÎR = 0, if we find points where ÎS = 0 and ÎI = 0?
2) Sketch a representative SI phase diagram for the SIR model
3) One possible scenario that would allow a population to be in equilibria is if there are zero infective individuals in the population. Indicate where these equilibria would be on your phase diagram above.
4) Are these equilibria (from part c) stable? Explain intuitively why they should or should not be. Indicate on your phase diagram above where the stable equilibria exist, and where the unstable equilibria exist for an SIR model.
The SIR model has many equilibria.
1) To find the equilibria, why is it not necessary to find when ÎR = 0, if we find points where ÎS = 0 and ÎI = 0?
2) Sketch a representative SI phase diagram for the SIR model
3) One possible scenario that would allow a population to be in equilibria is if there are zero infective individuals in the population. Indicate where these equilibria would be on your phase diagram above.
4) Are these equilibria (from part c) stable? Explain intuitively why they should or should not be. Indicate on your phase diagram above where the stable equilibria exist, and where the unstable equilibria exist for an SIR model.
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