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Electronics and Communication Engineering - Signals and Systems - Discussion

Discussion Forum : Signals and Systems - Section 1 (Q.No. 2)
Signals and Systems
2.
Which one most appropriate dynamic system?
y(n) + y(n - 1) + y(n + 1)
y(n) + y(n - 1)
y(n) = x(n)
y(n) + y(n - 1) + y(n + 3) = 0
Answer: Option
Explanation:

Because present output of y(n) depend upon past y(n - 1) and future y(n + 1).

Discussion:
24 comments Page 2 of 3.
Lucky said:   8 years ago
Dynamic system depends upon the past and future input and outputs. So in my view, option A and D are the correct answers.
Sridevi said:   8 years ago
Please, tell me the correct answer with the explanation.
Mohit said:   8 years ago
The Dynamic system depends on present and past i/p o/p. So option b is correct.
Ranbir said:   8 years ago
Option A and D is correct because both past and future value depends, and the option A has more correct than D due to order.
Chiku said:   8 years ago
Option A& D both are correct because both system satisfied condition of dynamic.
Apurva said:   8 years ago
In Dynamic systems, output depends on present input as well as past or future inputs.
Nnkundan said:   8 years ago
Both A and D is correct. But in above question there is a statement given that "one most appropriate". Now option "a" is more appropriate bcoz y(n) + y(n - 1) + y(n + 1) bcoz this dynamic system contains value of +-1 at the same time. If option "D" is given like y(n) + y(n - 3) + y(n + 3) then there is confusion between A and D. But here there is no confusion.
Swami said:   8 years ago
How system depends on future output? it is unrealizable and option B is correct.
Vimala said:   7 years ago
Option D is correct because A is not a system.
Joshi said:   7 years ago
As option A does not have the proper form of expression, so D must be the correct option.
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