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( y(t), t ) = v(t) :

> ode2 := diff( v(t), t ) = -3*v(t) - 2*y(t) :

> MODEL := [ ode1, ode2 ] ;

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

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