Arms Race: A simplified mathematical model for an arms race between two countries whose expenditures for defense are expressed by the variables x (t) and y(t) is given by the linear system dx = 2y = x + a dy = 4x - 3y + b where x (0) = 1 and y (0) = 4 and a and b are constants that measure the trust (or distrust) each country has for the other. Determine whether there is going to be disarmament (x and y approach 0 as t increases), a stabilized arms race (x and y approach a constant as → ∞o), or a runaway arms race (x and y approach +∞oast → ∞o). Justify your reasoning.

Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
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Arms Race: A simplified mathematical model for an arms race between two countries whose expenditures for defense are expressed by the variables x (t) and y (t)
is given by the linear system
dx
dt
dy
dt
=
2y = x + a
= 4x - 3y + b
where x (0) = 1 and y (0) = 4 and a and b are constants that measure the trust (or distrust) each country has for the other.
Determine whether there is going to be disarmament (x and y approach 0 as t increases), a stabilized arms race (x and y approach a constant as t → ∞), or a
runaway arms race (x and y approach +∞ ast → ∞). Justify your reasoning.
Transcribed Image Text:Arms Race: A simplified mathematical model for an arms race between two countries whose expenditures for defense are expressed by the variables x (t) and y (t) is given by the linear system dx dt dy dt = 2y = x + a = 4x - 3y + b where x (0) = 1 and y (0) = 4 and a and b are constants that measure the trust (or distrust) each country has for the other. Determine whether there is going to be disarmament (x and y approach 0 as t increases), a stabilized arms race (x and y approach a constant as t → ∞), or a runaway arms race (x and y approach +∞ ast → ∞). Justify your reasoning.
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