compute Fourier transform

Discussion in 'Math' started by devilishruby, Oct 21, 2013.

  1. devilishruby

    Thread Starter New Member

    Oct 21, 2013
    1
    0
    hi
    the question which i have uploaded has 2 part:
    a) compute Fourier transform of r[n]
    b) compute Fourier transform of w[n] based on previous part

    i don't understand why in part (b) n has been equaled by 1? (in red circle)
    would you please help me?

    [​IMG]
     
  2. blah2222

    Well-Known Member

    May 3, 2010
    554
    33
    Looks like it is just a typo and they dropped the 'n' as the only change in that step was that the cosine was converted to its polar form using Euler's Identity.
     
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