% Chapter 7 Matlab Figure on %           Anti-sym impulse response odd M%subplot(1,1,1)% ODD Mh = [-4,1,-1,-2,5,6,-6,-5,2,1,-1,4];M = length(h); n = 0:M-1; alpha = (M-1)/2;subplot(2,1,2);stem(n,h); axis([-1,M,-8,8]);title('Anti-Symmetric Impulse Response: M even')xlabel('n'); ylabel('h(n)')set(gca,'XTickMode','manual','XTick',[0,5,6,11],'Xgrid','on')set(gca,'XTickLabelMode','manual',...        'XTickLabels',['  0  ';'M/2+1';' M/2 ';' M-1 '])set(gca,'YTickMode','manual','YTick',[0],'Ygrid','off')set(gca,'YTickLabelMode','manual','YTickLabels',['0'])