% The construction proposed in ex_2_11.m is treated now using the % symbolic approach instead of the object-oriented approach. syms Int d1 d3 syss = d1*[Int d1*d3]*[1 1;0 1]*[d1*Int ; d3]; sys3 = sym2lfr(syss); % Note that 1/s must be denoted Int in the used formula. % Object-oriented approach (ex_2_12.m) for comparison lfrs Int d1 d3 sys2 = d1*[Int d1*d3]*[1 1;0 1]*[d1*Int ; d3]; % Comparison distlfr(sys2,sys3) % The distance should be zero.