Figure 8
From: Optimal control problem arises from illegal poaching of southern white rhino mathematical model
Autonomous simulation of \(h^{*}\). The dynamic of \(N_{2}\), \(N_{3}\), and M of system (1) with two different initial values, \((N_{2}, N_{3}, M)=(600,0,10)\) and \((400,10,5)\). For both initial values, the black curve tends to hunter-free equilibrium \(\mathcal{E}_{2}=(451.06,0,0)\), and the red curve tends to coexistence equilibrium \(\mathcal{E}_{3}=(80.13,1.27,35.59)\)