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:{{math|''α'', ''β'', ''γ'', ''δ''}} are positive real [[parameter]]s describing the interaction of the two [[species]].

:{{math|''α'', ''β'', ''γ'', ''δ''}} are positive real [[parameter]]s describing the interaction of the two [[species]].

where

where,

x is the number of prey (for example, rabbits);

：x is the number of prey (for example, rabbits);

y is the number of some predator (for example, foxes);

：y is the number of some predator (for example, foxes);

{\displaystyle {\tfrac {dy}{dt}}}{\tfrac {dy}{dt}} and {\displaystyle {\tfrac {dx}{dt}}}{\tfrac {dx}{dt}} represent the instantaneous growth rates of the two populations;

：{\displaystyle {\tfrac {dy}{dt}}}{\tfrac {dy}{dt}} and {\displaystyle {\tfrac {dx}{dt}}}{\tfrac {dx}{dt}} represent the instantaneous growth rates of the two populations;

t represents time;

:t represents time;

α, β, γ, δ are positive real parameters describing the interaction of the two species.

:, β, γ, δ are positive real parameters describing the interaction of the two species.

其中：

其中：