%
% Example 4 from Sec 1.2
%

C = [1 6 2 -5 -2 -4; 0 0 2 -8 -1 3; 0 0 0 0 1 7]

C(1,:) = C(1,:) + 2 * C(3,:)
C(2,:) = C(2,:) + C(3,:)
C(2,:) = (1/2) * C(2,:)
C(1,:) = C(1,:) - 2 * C(2,:)
