Multiple choice

Two discrete time systems with impulse responses h1[n] = $\delta$[n -1] and h2[n] = $\delta$[n - 2] are connected in cascade. The overall impulse response of the cascaded system is

  1. $\delta$[n - 1] + $\delta$[n - 2]
  2. $\delta$[n - 4]
  3. $\delta$[n - 3]
  4. $\delta$[n - 1] $\delta$[n - 2]
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation