railway DFCCIL Junior Executive 2023 (CBT 1 & CBT 2) Mock Test Signals and Systems Linear Time Invariant Systems Discrete Time LTI Systems
Which one of the following is correct for the given system ?
y[n] = x[n] - x[n - 1]
1
Time invariant and causal
2
Time variant and non-causal
3
Time variant and causal
4
Time invariant and non-causal