Continuing the study of the nonlinear system given in
Chapter , Problem 19(choose chapter or problem)
Continuing the study of the nonlinear system given in Exercise 18,(a) use the direction field to sketch the phase portrait for the system if a = 1,(b) use the direction field and the linearization at the equilibrium point to sketchthe phase portrait for a = 0, and(c) use the direction field and the linearization at the equilibrium points to sketchthe phase portrait for a = 1.
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