Question

Find the value of [d(t) – d(t-1)] * -x[t+1].

(a) x(t+1) – x(t)

(b) x(t) – x(t+1)

(c) x(t) – x(t-1)

(d) x(t-1) – x(t+1)

I had been asked this question during an online interview.

This question is from Continuous Time Convolution topic in section Time-Domain Analysis of CT Systems of Signals and Systems

Answer 1

Correct choice is (b) x(t) – x(t+1)

Easiest explanation: The delta function convolved with another function results in the shifted function.