The impulse response of discrete-time signal is given by h [n] = u [n – McqOptions

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1.	The impulse response of discrete-time signal is given by h [n] = u [n+3]. Whether the system is causal or not?
A.	causal
B.	non-causal
C.	insufficient information
D.	the system cannot be classified
Answer» C. insufficient information

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