Prove that \(\displaystyle\lim_{{{n}\rightarrow\infty}}{\frac{{{n}}}{{{2}{n}-{1}}}}={\frac{{{1}}}{{{2}}}}\)

London Douglas

London Douglas

Answered question

2022-03-30

Prove that limnn2n1=12

Answer & Explanation

Drake Huang

Drake Huang

Beginner2022-03-31Added 15 answers

Let Sn be a sequence of real numbers, which is said to be convergent to limit L as n approaches to if
>0NI such that |SnL|<,nN
Given limnn2n1=12
Here, Sn=n2n1,L=12
Thus
|SnL|<
|n2n112|<
|2n1(2n1)2(2n1)|<
|2n2n+12(2n1)|<
|14n2|<
14n2<
14n<
4n>1
n>14=N
Select N=[14]
>0N=[14] such that |n2n112|<,nN
Hence, limnn2n1=12

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