engineering recuitment NIC NIELIT Scientist B 2023 Mock Test Signals and Systems Introduction To Signals and Systems Classification of Signals
The input and output of a continuous time system are respectively denoted by x(t) and y(t). Which of the following descriptions corresponds to a causal system?
1
y(t) = x(t - 2) + x(t + 4)
2
y(t) = (t - 4) x(t + 1)
3
y(t) = (t + 4) x(t - 1)
4
y(t) = (t + 5) x(t + 5)