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Periodicity of signals

Discussion in 'Mathematics and Physics' started by adrianvon, Nov 6, 2014.

  1. adrianvon

    adrianvon Member

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    Hi all,

    Am I right if I say that:

    Signals with T made from a rational number is a periodic signal ?
    and
    Signals with T made from irrational number is a non-periodic signal ?

    If so, why in the example linked below it is states that the signal with T = pi is a periodic signal when pi is an irrational value?

    Link: https://engineering.purdue.edu/~ipollak/ece301/FALL11/homework_solutions/hw2_sol.pdf

    Any help would be highly appreciated.
     
  2. steveB

    steveB Well-Known Member Most Helpful Member

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    Periodic signals can have irrational periods.
     

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