TABLE 4.

The formula of the determinant for each equilibrium point.

Equilibrium point	Det J	Tr J
(0,0)	[S2+L2–h(1-α)L2–Cc2][R2+(β–1)Cg2+F2+kL2(1–g)]	[S2+L2–h(1–α)L2–Cc2]+[R2+F2+(β–1)Cg2 +kL2(1–g)]
(1,0)	[Cc2–S2–L2+h(1–α)L2][(β–1)Cg2+h(1–α)(kL2+M2)]	[Cc2–S2–L2+h(1–α)L2]+[(β–1)Cg2+h(1–α)(kL2+M2]
(0,1)	(S2+F2+gL2–Cc2) [(1–β)Cg2–R2–F2–k(1–g)L2]	(S2+F2+gL2–Cc2)+[-R2–F2+(1–β)Cg2–k(1–g)L2]
(1,1)	(Cc2–S2–F2–gL2) [(1–β)Cg2–h(1–α) (kL2+M2)]	(Cc2–S2–F2–gL2)+[(1–β)Cg2–h(1–α)(kL2+M2)]