Q.24 The symbols, a and T, represent positive quantities, and u(t) is the unit step function. Which one of the following impulse response is NOT the output of a causal linear time-invariant system?
(A) 
(B) 
(C)
(D) 
Answer:(B)
Explanation:
Q.24 The symbols, a and T, represent positive quantities, and u(t) is the unit step function. Which one of the following impulse response is NOT the output of a causal linear time-invariant system?
(A)
(B)
(C)
(D)
Answer:(B)
Explanation:
