Suppose that the DE dy/dt = y(70 - y ) - 600 models a logistic equation with harvesting, where y(t) represents a tilapia population in a lake at time t, measured in years.

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
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Suppose that the DE

dy/dt = y(70 - y ) - 600

models a logistic equation with harvesting, where y(t) represents a tilapia population in a lake at time t, measured in years.

d) The stable critical point is
y =
while the unstable one is
Y =
Transcribed Image Text:d) The stable critical point is y = while the unstable one is Y =
e) Using the fourth order Runge-Kutta Method, with a step-size of h =
12
to approximate
y() if y(0) :
40, yields:
koi
ko2
ko3
ko4
and thus
y(1/12) = Þ(1/12) ~ y1 =
||
||
Transcribed Image Text:e) Using the fourth order Runge-Kutta Method, with a step-size of h = 12 to approximate y() if y(0) : 40, yields: koi ko2 ko3 ko4 and thus y(1/12) = Þ(1/12) ~ y1 = || ||
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