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Check periodicity of function

  1. Oct 22, 2011 #1
    Hello, I have got a question about the periodicity of a function.
    I know that in discrete domain, a periodic function have to verify
    x[n] = x[n+N]
    where N is the positive integer and foundamental period.
    My problem is that if I have a function like this: e^(j3π(n+1/2)/5),
    how can I confirm if that the function can be periodical?
    I attemted to use the Euler equivalent, but still no solution came to my mind.
    Thank you!
     
  2. jcsd
  3. Oct 23, 2011 #2
    I attached a photo.It's not so clear but I hope you can understand the content in it.According to that discussion,I found that given func. is not periodic.
     

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