Multiple choice

Let x(t) be the input to a linear, time-invariant system. The required output is 4x (t-2). The transfer function of the system should be

  1. 4 ej4$\pi$f
  2. 2 e-j8$\pi$f
  3. 4 e-j4$\pi$f
  4. 2 ej8$\pi$f
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation