Equilibrium Solutions
> EQUILeqns := { rhs( ode1 ) = 0, rhs( ode2 ) = 0 } ;
> EQUILsoln := solve( EQUILeqns, convert(VARS,set) ) ;
Notice that there are four equilibria - since there are four intersections of an - and a -nullcline, this is consistent with the nullclines
>
> display( [DIRplot, NULLplot], title=`Direction Field and Nullclines` );
>