%
% Example 1 from Sec 1.1
%

C = [1 -2 1 0; 0 2 -8 8; -4 5 9 -9]
C(3,:) = C(3,:) + 4 * C(1,:)
C(2,:) = (1/2) * C(2,:)
C(3,:) = C(3,:) + 3 * C(2,:)
C(1,:) = C(1,:) + 2 * C(2,:)
C(1,:) = C(1,:) + 7 * C(3,:)
C(2,:) = C(2,:) + 4 * C(3,:)

