% Linear Algebra: Theory and Applications
% Ward Cheney & David Kincaid
% JBPub.com (c) 2008 
% File: exp8210.m
% Example 8.2.10

A = [4,-1,-1,0;-1,4,0,-1;-1,0,4,-1;0,-1,-1,4]
L = chol(A)
L*L'