Figure 4From: Geometrical analysis and control optimization of a predator-prey model with multi state-dependent impulse Numerical simulation of Example 1 . (a) Phase portrait of \(x(t)\) and \(y(t)\) on \(h_{1}=0.6\). (b) Time series of \(x(t)\). (c) Time series of \(y(t)\).Back to article page