| Line 20: | Line 20: | ||
===Answer 1=== | ===Answer 1=== | ||
x[n] = sin(2*pi/100*n)= 1/(2*j)*(exp(j*2*pi/100*n)-exp(-j*2*pi/100*n)) | x[n] = sin(2*pi/100*n)= 1/(2*j)*(exp(j*2*pi/100*n)-exp(-j*2*pi/100*n)) | ||
| − | X(w) = \sum | + | |
| + | X(w) = \sum \left( \right) | ||
===Answer 2=== | ===Answer 2=== | ||
Revision as of 14:26, 12 September 2013
Contents
Practice Problem on Discrete-time Fourier transform computation
Compute the discrete-time Fourier transform of the following signal:
$ x[n]= \sin \left( \frac{2 \pi }{100} n \right) $
(Write enough intermediate steps to fully justify your answer.)
You will receive feedback from your instructor and TA directly on this page. Other students are welcome to comment/discuss/point out mistakes/ask questions too!
Answer 1
x[n] = sin(2*pi/100*n)= 1/(2*j)*(exp(j*2*pi/100*n)-exp(-j*2*pi/100*n))
X(w) = \sum \left( \right)
Answer 2
Write it here.
