A function is said to have a horizontal asymptote if either the limit at infinity exists or the limit at negative infinity exists. Show that each of the following functions has a horizontal asymptote by calculating the given limit. – 8x lim 4 + 2x 4х — 4 lim x → – ∞ x3 + 2x 5 x2 9x lim 3 6x2 Vx2 + 14x lim 2 4x x² + 14x lim x → - O 2 — 4ӕ ||

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter4: Polynomial And Rational Functions
Section4.5: Rational Functions
Problem 7E
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A function is said to have a horizontal asymptote if either the limit at infinity exists or the limit at negative
infinity exists.
Show that each of the following functions has a horizontal asymptote by calculating the given limit.
– 8x
lim
4 + 2x
4х — 4
lim
x → – ∞
x3 + 2x
5
x2
9x
lim
3
6x2
Vx2 + 14x
lim
2
4x
x² + 14x
lim
x → - O
2 — 4ӕ
||
Transcribed Image Text:A function is said to have a horizontal asymptote if either the limit at infinity exists or the limit at negative infinity exists. Show that each of the following functions has a horizontal asymptote by calculating the given limit. – 8x lim 4 + 2x 4х — 4 lim x → – ∞ x3 + 2x 5 x2 9x lim 3 6x2 Vx2 + 14x lim 2 4x x² + 14x lim x → - O 2 — 4ӕ ||
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