//Example 1.13
//Program to Compute convolution of given sequences
//x(n)=[1 2 1 1], h(n)=[1 -1 1 -1];
clear;
clc ;
close ;
x=[1 2 1 1];
h=[1 -1 1 -1];
y=convol(x,h);
disp(round(y));