Many years later, when Glen finally retires from writing math texts, he decides to join his friends and former collabora

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Many Years Later When Glen Finally Retires From Writing Math Texts He Decides To Join His Friends And Former Collabora 1 (22.29 KiB) Viewed 53 times

Many years later, when Glen finally retires from writing math texts, he decides to join his friends and former collaborators Paul and Bob. He opens an ice creme store between Paul's and Bob's cafes. Let z(t) be Glen's profits at time t (with x(t) and y(t) representing Paul's and Bob's profits, respectively). Suppose the three stores affect each other in such a way that -y + 2 a = -2 + 22. Suppose that at time t = 0 both Paul and Bob are just breaking even, but Glen is making a small profit [x(0) and yo) are zero, but z(0) is small and positive). (a) Sketch the solution curve in the xyz-phase space.