format short e                 % Set display formatn = 3;                         % Define orderWn = 1;                        % Prototype bandwidth Wo = 2*pi*150;                 % Specify new bandwidth[b,a] = butter(n,Wn,'s');      % Prototype coefficients[b1,a1] = lp2lp(b,a,Wo);       % Convert bandwidthb1                             % Numerator coefficients a1                             % Denominator coefficients         %% Check on previous results.%[b2,a2] = butter(n,Wo,'s');    % Determine coefficientsb2                             % Numerator coefficientsa2                             % Denominator coefficients