The impulse response of an LTI system h[n] = {1, 2, 1, -1}. Find the response y[n] of the system for the input x[n] = {1, 2, 3, 1} using Discrete time Fourier Transform.

Subject : Signals & Systems

Topic : Continuous Time Fourier Transform (CTFT) and Discrete Time Fourier Transform (DTFT).

Difficulty: Medium