**AIM: - To understand stability test**

**PROGRAM: -**

%Program for stability test

clc;

clear all;

close all;

b=input('enter the denominator coefficients of the filter');

k=poly(b);

knew=fliplr(k);

s=all(abs(knew));

if(s==1)

disp('''stable system''');

else

disp('''Non-stable System''');

end

**Output: -**

enter the denominator coefficients of the filter[1 -1 .5]

'stable system'

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