Prove the following, unofficially known as the Awesome Lemma or Awesome Theorem: Suppose {an} is a sequence that converges to a real number a. (a) If a < b, then there exists an NEN such that, if n > N, then an < b. (b) If a > b, then there exists an NEN such that, if n > N, then an > b. (You may omit the proof of part (b) and simply state that it follows from part (a) “by symmetric argument.")

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Prove the following, unofficially known as the Awesome Lemma or Awesome Theorem:
Suppose {a,} is a sequence that converges to a real number a.
(a) If a < b, then there exists an NEN such that, if n > N, then an < b.
(b) If a > b, then there exists an NEN such that, if n > N, then an > b.
(You may omit the proof of part (b) and simply state that it follows from part (a)
“by symmetric argument.")
Transcribed Image Text:Prove the following, unofficially known as the Awesome Lemma or Awesome Theorem: Suppose {a,} is a sequence that converges to a real number a. (a) If a < b, then there exists an NEN such that, if n > N, then an < b. (b) If a > b, then there exists an NEN such that, if n > N, then an > b. (You may omit the proof of part (b) and simply state that it follows from part (a) “by symmetric argument.")
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