Realization of "Addition" in MATLAB with example

close all

clc;

n=0:20;

x_n=n.*((n>=0)-(n>=10));

subplot(3,1,1);

stem(n,x_n);

y_n=(n>=10)-(n>=20);

alfa=-0.3*(n-10);

z_n=10*(exp(alfa)).*y_n;

subplot(3,1,2);

stem(n,z_n);

output=x_n+z_n;

subplot(3,1,3);

stem(n,output);

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