By using the definition of Cauchy sequences, prove that (an+bn) is a Cauchy sequence if both (an) and (bn) are Cauchy sequences.
Added by Joseph E.
Step 1
Step 1: Given that (an) and (bn) are Cauchy sequences, we know that for every ε > 0, there exists N1 and N2 in natural numbers such that for all n ≥ N1, |an - am| < ε/2 and for all n ≥ N2, |bn - bm| < ε/2. Show more…
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