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Discrete time invariant system

  1. Jan 20, 2012 #1
    the discrete time system defined by y[n]= x[n] ^ 2
    Is it time varying ?
    I proceeded as follows
    x[n] → x[n]^2
    x[n+a] → x[n+a]^2
    so y[n+a] = x[n+a]^2
    So according to me it is time invariant
    Am i right ?
     
  2. jcsd
  3. Feb 15, 2012 #2
    ya ... it is a non-linear time-invariant system
     
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