Resolution:
## Figure 2.
Rate curves [6] of system (2) for the parameters k_{1 }= 8, k_{2 }= 1, k_{3 }= 1, k_{4 }= 1.5. The thick solid line is the rate of the removal of reactant X (sum of the negative
terms in ) and the thick dashed line the rate of production (positive term in ). The three crossings indicate the three steady states . The thin lines show the contributions of the three degradation terms separately:
quadratic term k_{2}x^{2 }dashed, the effectively cubic term k_{3 }xy solid, and the linear term k_{4 }x dotdashed. The inset shows a zoomed version for x < 2.1.
Wilhelm |