Question: Let (sn) be an unbounded from below decreasing sequence of real num- bers. Prove that limnsn=. Let (tn) and (sn) be two Cauchy sequences of

  1. Let (sn) be an unbounded from below decreasing sequence of real num- bers. Prove that limnsn=.
  2. Let (tn) and (sn) be two Cauchy sequences of real numbers. Using the definition of Cauchy sequence prove that (tnsn) is also a Cauchy sequence.

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