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  1. bibo_dvd

    Periodic Complex exponential signal

    omg , now i understand , we need cos(wT) to be always 1 , so cos (2*pi) and (4*pi) and so on , yaaaayyyyy :D Thx man for help :)
  2. bibo_dvd

    Periodic Complex exponential signal

    okay , i know Euler's formula but i can't understand " wt=m*2*pi " or "T=m*(2pi/w) m=positive integer" how did this part was given ??
  3. bibo_dvd

    Periodic Complex exponential signal

    hello guys .. first of all , iam not sure that i should type this thread here . so excuse me for that in this problem i can understand the part untill it's said that w=0 then x(t)=1, which is periodic for any value of T but i can't understand the part after that in the case of w is not equal...
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