Signum function in MATLAB | m-file

%Signum function in MATLAB

close all;

clc;

n=-20:20;

x_n1=n>=0;

subplot(3,1,1);

stem(n,x_n1);

x_n2=n<=0;

subplot(3,1,2);

stem(n,x_n2);

sgn_n=x_n1-x_n2;

subplot(3,1,3);

stem(n,sgn_n);

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