hw13_20.m Matlab script for finding the
critical points of a phase plane system, and computing the eigenvalues
and eigenvectors of the linearization matrix at each one
hw13.m Matlab script for finding the
critical points of a phase plane system, and computing the eigenvalues
and eigenvectors of the linearization matrix at each one-this one
is more complicated: it uses the ideas in syss.m to find eigenvectors
with integer entries wherever possible