GATE 2020 EE Q.39: official answer

GATE 2020 · EEQ.39 · 2 marks · MCQ

Which of the following options is true for a linear time-invariant discrete time system that obeys the difference equation:
$y [n] - a y [n - 1] = b_{0} x [n] - b_{1} x [n - 1]$

(A)
$y [n]$ is unaffected by the values of $x [n - k]; k > 2$ .
(B)
The system is necessarily causal.
(C)
The system impulse response is non-zero at infinitely many instants.
(D)
When $x [n] = 0, n < 0$ , the function $y [n]; n > 0$ is solely determined by the function $x [n]$ .

See the question in the paper

GATE 2020 EE question 39

Tap to open full size

Official answer

Official answer: CSource: Official answer key, GATE 2020 EE (IIT Delhi)

From the GATE 2020 EE paper. Every question of this paper · Download the full paper · All 31 LTI & convolution questions, with notes

More LTI & convolution questions