Textbook ExpertVerified Tutor
30 Dec 2021
Given information
We are given that , , and represent the populations of these three species (Fly, Frog, Crocodile) at time .
Step-by-step explanation
Step 1.
Let us start with the assumption that,
In absence of frogs, Population of flies can be modeled by
Note that is a positive constant, because population of flies must increase in absence of frogs.
The interaction between flies and the frog population will hurt the population of flies, therefore we subtract from the RHS.
Let us start with the assumption that,
In absence of flies, Population of frogs can be modeled by
Note minus sign, It is because population of frogs will decrease in absence of food.
The interaction between flies and the frog population will help the population of frogs, therefore we add in the RHS.
The interaction between frog and the crocodile population will hurt the population of frogs, therefore we subtract in the RHS.