Problem 2: Consider the following equation for a certain population of squirrels given by P(t) (t is measured in years). dP = 2.32P dt - 10 a Find all the equilibrium points of the equations. Draw the phase line and determine the stability of each equilibrium points. b Make a graph of the solutions with initial conditions P(0) = 4, P(0) = 6, and P(0) = 12. c At a certain time the hunting of squirrels become permitted and the law allows that a certain percentage a of the squirrel population be eliminated every year. A new equation for the squirrel population is then dP 2.32P ( 1 10 1) – aP dt The IALS (International Association for the Liberation of Squirrels) asserts than no more than 19% of squirrels should be eliminated every year (i.e a = 0.19), otherwise the pop- ulation would go extinct. On the contrary the UHA (United Hunters of America) asserts that it is safe to hunt 41% of the squirrel population every year (i.e. a = 0.41). • Analyze the systems as a varies and determine who is right from the IALS or the UHA. • Find the largest possible value of a so that the squirrel population does not go extinct.

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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Problem 2: Consider the following equation for a certain population of squirrels given by
P(t) (t is measured in years).
dP
= 2.32P | 1-
dt
1)
10
a Find all the equilibrium points of the equations. Draw the phase line and determine the
stability of each equilibrium points.
b Make a graph of the solutions with initial conditions P(0) = 4, P(0) = 6, and P(0) = 12.
c At a certain time the hunting of squirrels become permitted and the law allows that a
certain percentage a of the squirrel population be eliminated every year. A new equation
for the squirrel population is then
dP
= 2.32P | 1-
dt
- 1) - αP
5
10
The IALS (International Association for the Liberation of Squirrels) asserts than no more
than 19% of squirrels should be eliminated every year (i.e a =
ulation would go extinct. On the contrary the UHA (United Hunters of America) asserts
that it is safe to hunt 41% of the squirrel population every year (i.e. a =
0.19), otherwise the pop-
0.41).
• Analyze the systems as a varies and determine who is right from the IALS or the
UHA.
• Find the largest possible value of a so that the squirrel population does not go extinct.
Transcribed Image Text:Problem 2: Consider the following equation for a certain population of squirrels given by P(t) (t is measured in years). dP = 2.32P | 1- dt 1) 10 a Find all the equilibrium points of the equations. Draw the phase line and determine the stability of each equilibrium points. b Make a graph of the solutions with initial conditions P(0) = 4, P(0) = 6, and P(0) = 12. c At a certain time the hunting of squirrels become permitted and the law allows that a certain percentage a of the squirrel population be eliminated every year. A new equation for the squirrel population is then dP = 2.32P | 1- dt - 1) - αP 5 10 The IALS (International Association for the Liberation of Squirrels) asserts than no more than 19% of squirrels should be eliminated every year (i.e a = ulation would go extinct. On the contrary the UHA (United Hunters of America) asserts that it is safe to hunt 41% of the squirrel population every year (i.e. a = 0.19), otherwise the pop- 0.41). • Analyze the systems as a varies and determine who is right from the IALS or the UHA. • Find the largest possible value of a so that the squirrel population does not go extinct.
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