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Discussion in 'Homework Help' started by mo2015mo, Jan 25, 2014.

  1. mo2015mo

    Thread Starter Member

    May 9, 2013
    157
    1
    Hello my friend,,,

    While i'm studying the DSP course , I faced this problem as attached photo
    please help me about this theorem states Ʃ1 = N+1..
    thanks in advance.. :)
     
  2. shteii01

    AAC Fanatic!

    Feb 19, 2010
    3,399
    497
    You are reading the theorem wrong.

    You have a sum of terms, the number of terms is from n=0 to N.

    Let say you have one term, the first term is n=0, since you only have one term then N=0 too. So the sum of terms is u^2(0)=1^2=1.
    Since N=0, then N+1=0+1=1.
    So. u^2(0)=N+1

    Now lets do two terms.
    First term is n=0.
    Second term is n=1.
    N=1 because we are doing two terms where first term is n=0, second term is n=1.
    u^2(0)+u^2(1)=1^2+1^2=1+1=2
    N+1=1+1=2
    So. u^2(0)+u^2(1)=N+1

    And so on.
     
  3. mo2015mo

    Thread Starter Member

    May 9, 2013
    157
    1
    thanks very very very very much for your help :)
     
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