Find the value of 2sgn(0)d[0] + d[1] + d[45], where sgn(is the signum function.
A. 2
B. -2
C. 1
D. 0
Answer:A
Find the value of 2sgn(0)d[0] + d[1] + d[45], where sgn(is the signum function.
A. 2 B. -2 C. 1 D. 0
Explanation: sgn(0)=0, and d[n] = 0 for all n not equal to zero. Hence the sum reduces to zero.