- #1
rocomath
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Very confused!
Consider a lake that is stocked with walleye pike and that the population of pike is governed by the logistic equation:
P'=0.1P(1-P/10),
where time is measures in days and P in thousands of fish. Suppose that fishing is started in this lake and that 100 fish are removed each day.
a) Modify the logistic model to account for the fishing.
b) Find and classify the equilibrium points for your model.
c) Use qualitative analysis to completely discuss the fate of the fish population with this model. In particular, if the initial population is 1000, what happens to the fish as time passes? What will happen to an initial population having 2000 fish?
a) P'=0.1P(1-P/10)-0.1P
b) 0.1P(1-P/10)-0.1P -> -P^2/10, P=0 which is stable.
Correct so far? I think I may need a hint for (c).
Consider a lake that is stocked with walleye pike and that the population of pike is governed by the logistic equation:
P'=0.1P(1-P/10),
where time is measures in days and P in thousands of fish. Suppose that fishing is started in this lake and that 100 fish are removed each day.
a) Modify the logistic model to account for the fishing.
b) Find and classify the equilibrium points for your model.
c) Use qualitative analysis to completely discuss the fate of the fish population with this model. In particular, if the initial population is 1000, what happens to the fish as time passes? What will happen to an initial population having 2000 fish?
a) P'=0.1P(1-P/10)-0.1P
b) 0.1P(1-P/10)-0.1P -> -P^2/10, P=0 which is stable.
Correct so far? I think I may need a hint for (c).
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