Defining the model

All differential equation models begin with a differential equation. If the problem is an intial value problem, an initial condition is also needed. Replace the question marks ( ? ) in the following input regions to define the relevant ODE model.

> ode1 := diff( x(t), t ) = 2*x(t)*(1-x(t)/2) - x(t)*y(t) ;

> ode2 := diff( y(t), t ) = 3*y(t)*(1-y(t)/3) - 2*x(t)*y(t) ;

> MODEL := { ode1, ode2 } :

> VAR := { x(t), y(t) } ;

>