What is the Fourier transform of the signal x(n)=a|n|, |a|<1?
A. (1+a2)/(1-2acosω+a2)
B. (1-a2)/(1-2acosω+a2)
C. 2a/(1-2acosω+a2 )
D. None of the mentioned
Answer:A
What is the Fourier transform of the signal x(n)=a|n|, |a|<1?
A. (1+a2)/(1-2acosω+a2) B. (1-a2)/(1-2acosω+a2) C. 2a/(1-2acosω+a2 ) D. None of the mentioned
Explanation: First we observe x(n) can be expressed as