Lotka-Volterra Systems Consider the following example of a nonlinear two dimensional Lotka- Volterra predator-prey system r(t) =エ(t)-r'(t)-Air(t)y(t), where the constants λί > 0 and Az > 0 satisfy λιλ2 and we are interested in solutions of (1) that remain in the first quadrant of the ry-plane so that r(t) 20, and yt) 20, for all t0 1. Assume that either λί < 1CA2 or λ2 < 1<λι. (a) Find all critical points (à. ) of the system (1) located in the first quadrant of the (b) For each critical point in (o) compute the linearization of the system (1) about (e) For each critical point in (a) use your linearization in (b) to determine the local ry-plane, including on the boundary that critical point. stability (i.e. the stability in a neighborhood around the critical point) for the system (1)
Lotka-Volterra Systems Consider the following example of a nonlinear two dimensional Lotka- Volterra predator-prey system r(t) =エ(t)-r'(t)-Air(t)y(t), where the constants λί > 0 and Az > 0 satisfy λιλ2 and we are interested in solutions of (1) that remain in the first quadrant of the ry-plane so that r(t) 20, and yt) 20, for all t0 1. Assume that either λί < 1CA2 or λ2 < 1<λι. (a) Find all critical points (à. ) of the system (1) located in the first quadrant of the (b) For each critical point in (o) compute the linearization of the system (1) about (e) For each critical point in (a) use your linearization in (b) to determine the local ry-plane, including on the boundary that critical point. stability (i.e. the stability in a neighborhood around the critical point) for the system (1)
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Transcribed Image Text:Lotka-Volterra Systems
Consider the following example of a nonlinear two dimensional Lotka- Volterra predator-prey
system
r(t) =エ(t)-r'(t)-Air(t)y(t),
where the constants λί > 0 and Az > 0 satisfy λιλ2 and we are interested in solutions
of (1) that remain in the first quadrant of the ry-plane so that
r(t) 20, and yt) 20,
for all t0
1. Assume that either λί < 1CA2 or λ2 < 1<λι.
(a) Find all critical points (à. ) of the system (1) located in the first quadrant of the
(b) For each critical point in (o) compute the linearization of the system (1) about
(e) For each critical point in (a) use your linearization in (b) to determine the local
ry-plane, including on the boundary
that critical point.
stability (i.e. the stability in a neighborhood around the critical point) for the
system (1)
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