Calculus with Applications (10th Edition)

Published by Pearson
ISBN 10: 0321749006
ISBN 13: 978-0-32174-900-0

Chapter 2 - Nonlinear Functions - 2.3 Polynomial and Rational Functions - 2.3 Exercises - Page 74: 20

Answer

$$ y=\frac{2x^{2}+3}{x^{3}-1} $$ The line with equation $x=1 $ as vertical asymptotic. The line $y=0 $ is a horizontal asymptotic. The y-intercept is -3 This is graph $C$.

Work Step by Step

$$ y=\frac{2x^{2}+3}{x^{3}-1} $$ The value $x= 1$ makes the denominator 0, but not the numerator, so the line with equation $$ x=1 $$ as vertical asymptotic. To find a horizontal asymptotic, let $x$ get larger and larger, so that $$ y=\lim _{x \rightarrow \infty} \frac{2x^{2}+3}{x^{3}-1} =0 $$ This means that the line $y=0 $ is a horizontal asymptotic. When $x=0 $ the y-intercept is -3 This is graph $C$.
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