[V,D]=eig(A,B);  % find the eigenvectors and eigenvalues

w2raw=-(T/mu)*diag(D);  % convert lambda to omega^2

[w2,k]=sort(w2raw);  % sort omega^2 into ascending along with a
                     % sort key k(n) that remembers where each
                     % omega^2 came from so we can plot the proper
                     % eigenvector in V

for n=1:N  % run through the sorted list and plot each eigenvector
   % load the plot title into t
   t=sprintf(' w^2 = %g w = %g ',w2(n),sqrt(abs(w2(n))) );
   gn=V(:,k(n)); % extract the eigenvector
   plot(x,gn,'b-');  % plot the eigenvector that goes with omega^2
   title(t);xlabel('x');ylabel('g(n,x)');  % label the graph
   pause
end