For each two-population system in 26 through 34, first
Chapter , Problem 33(choose chapter or problem)
For each two-population system in 26 through 34, first describe the type of x- and y-populations involved (exponential or logistic) and the nature of their interaction competition, cooperation, or predation. Then find and characterize the systems critical points (as to type and stability). Determine what nonzero x- and y-populations can coexist. Finally, construct a phase plane portrait that enables you to describe the long-term behavior of the two populations in terms of their initial populations x.0/ and y.0/. dx/dt = 30x 2x2 xy, dy dt = 80y 4y2 + 2xy3
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