Nullclines

It is difficult to give a general outline for the determination of nullclines. The key is to set the RHS of each ODE in the system equal to zero and to find all curves on which the resulting equation is satisfied.

x-nullclines

y-nullclines

The complete nullcline plot is the union of the plots of the [Maple Math] - and [Maple Math] -nullclines.

> NULLplot:=display( [xNULLplot, yNULLplot],

> title=`Nullclines for ?` ):

> NULLplot;

>