Find all vertical asymptotes and holes of each function.
Table of contents
- 0. Review of Algebra4h 18m
- 1. Equations & Inequalities3h 18m
- 2. Graphs of Equations1h 43m
- 3. Functions2h 17m
- 4. Polynomial Functions1h 44m
- 5. Rational Functions1h 23m
- 6. Exponential & Logarithmic Functions2h 28m
- 7. Systems of Equations & Matrices4h 5m
- 8. Conic Sections2h 23m
- 9. Sequences, Series, & Induction1h 22m
- 10. Combinatorics & Probability1h 45m
5. Rational Functions
Asymptotes
Struggling with College Algebra?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Find the horizontal asymptote of each function.
f(x)=2x3+8x2x2+4x
A
Horizontal Asymptote at y=0
B
Horizontal Asymptote at y=21
C
Horizontal Asymptote at y=2
Verified step by step guidance1
Identify the degrees of the numerator and the denominator. The degree of the numerator is the highest power of x, which is 2 (from x^2), and the degree of the denominator is 3 (from 2x^3).
Compare the degrees of the numerator and the denominator. If the degree of the numerator is less than the degree of the denominator, the horizontal asymptote is y = 0.
If the degrees were equal, the horizontal asymptote would be the ratio of the leading coefficients. However, since the degree of the numerator is less than the degree of the denominator, the horizontal asymptote is y = 0.
Consider the possibility of other horizontal asymptotes by analyzing the behavior of the function as x approaches infinity. Since the degree of the numerator is less than the degree of the denominator, the function approaches zero.
Conclude that the horizontal asymptote for the given function f(x) = \frac{x^2 + 4x}{2x^3 + 8x^2} is y = 0.
Watch next
Master Introduction to Asymptotes with a bite sized video explanation from Patrick
Start learningRelated Videos
Related Practice
Multiple Choice
654
views
1
comments

