% Numerical Mathematics and Computing, Fifth Edition
% Ward Cheney & David Kincaid
% Brooks/Cole Publ. Co.
% (c) 2003
%
% file: null.m

% null space of matrix A for eigenvalue 5
% two ways

A = [3 2; 7 -2]
B = A - 5*eye(2)
null(B)
[V, D] = eig(A)