Can anyone show the steps of how it goes from
the limit from 2 --> infinity to 0 --> infinity?
http://i43.tinypic.com/rcrd51.jpg
圖片參考:http://imgcld.yimg.com/8/n/HA00799676/o/701111260035813873405290.jpg
I tried to do, but I don't know if it is correct.
The 0th term is (1/3)^2 , the 1st term is (1/3)^3 * e^-jw