Prove that a sequence { {a_n} } does not converge to the number a if and only if there is some &


Question: #2) Prove that a sequence \(\left\{ {{a}_{n}} \right\}\) does not converge to the number a if and only if there is some \(\varepsilon >0\) and a subsequence \(\left\{ {{a}_{{{n}_{k}}}} \right\}\) such that

\[|{{a}_{{{n}_{k}}}}-a|\ge \varepsilon \]

for every index k.

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Answer: The answer consists of 1 page
Deliverable: Word Document

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