Difference equation of three different systems is as shown:
y1(n) = 0.2 y1(n – 1) + x(n) – 0.3 x(n – 1) + 0.02 x(n – 2)
y2(n) = x(n) – 0.1 x(n – 1)
y3(n) = 0.5 y3(n – 1) + 0.4 x(n) – 0.3 x(n – 1)
Which of the following systems are equivalent:
1
y1(n) and y2(n)
2
y2(n) and y3(n)
3
y3(n) and y1(n)
4
All the systems are equivalent