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Homework Help: Cauchy sequence

  1. Oct 26, 2011 #1
    If 0<r<1 and |x(n+1) - x(n)| < r ^n for all n. Show that x(n) is Cauchy sequence.
    help please.
     
  2. jcsd
  3. Oct 27, 2011 #2

    dextercioby

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    You may have at least written & used the definition of a Cauchy sequence...
     
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