Let . We say that  is the limit of  f as x->∞ and write limx->∞f(x)=L provided that for each episilon greater than 0 there is a real number N>a such that x>N implies that |f(x)-L|∞f(x)=L and limx->∞g(x)=M, where L, M ∈ ℝ . Prove the following  If  g(x) is not 0 for  x>a and M is not 0 , then limx->∞(f/g)(x)=L/M

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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Definition

Let . We say that  is the limit of  f as x-> and write

limx->f(x)=L

provided that for each episilon greater than 0 there is a real number N>a such that x>N implies that |f(x)-L|<episilon

 

Use the above definition to prove the following:

Let f and g be real-valued functions defined on (b, ∞). Suppose that limx->f(x)=L and limx->g(x)=M, where L, M ∈ ℝ .

Prove the following

 If  g(x) is not 0 for  x>a and M is not 0 , then limx->(f/g)(x)=L/M

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