In each of 1 through 4, verify that (0, 0) is a critical
Chapter 9, Problem 2(choose chapter or problem)
In each of 1 through 4, verify that (0, 0) is a critical point, show that the system is locally linear, and discuss the type and stability of the critical point (0, 0) by examining the corresponding linear system.dx/dt = x + y + 2xy, dy/dt = 4x y + x2 y2
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