y-nullclines

And, now, the same general steps for the -nullclines:

> yNULLeqn := factor( rhs(ode2) ) = 0 ;

Thus, the -nullcline consists of the two lines and . Here is how these might be plotted:

> yNULL1 := plot( 0, x=-2..4, color=BLUE ):

> yNULL2 := plot( 3-2*x, x=-2..4, color=BLUE ):

> yNULLplot := display( [ yNULL1, yNULL2 ], axes=BOXED ):

> yNULLplot;

>