What is the energy density spectrum of the signal x(n)=anu(n), |a|<1?
A. 1/(1+2acosω+a2 )
B. 1/(1-2acosω+a2 )
C. 1/(1-2acosω-a2 )
D. 1/(1+2acosω-a2 )
Answer:A
What is the energy density spectrum of the signal x(n)=anu(n), |a|<1?
A. 1/(1+2acosω+a2 ) B. 1/(1-2acosω+a2 ) C. 1/(1-2acosω-a2 ) D. 1/(1+2acosω-a2 )
Explanation: Given x(n)= anu(n), |a|<1