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Asymptote Calculator

Find vertical, horizontal, and oblique asymptotes for a rational function using polynomial coefficients.

ƒ(x)

Function details

f(x) = (x² + 1) ÷ (x − 2)
Numerator: a₂x² + a₁x + a₀
x
constant
Denominator: b₂x² + b₁x + b₀
x
constant
The denominator cannot be the zero polynomial.

Your result

ASYMPTOTE SUMMARY
x = 2
The function has one vertical asymptote and one oblique asymptote.
Vertical asymptote(s)x = 2
Horizontal asymptoteNone
Oblique asymptotey = x + 2
Removable hole(s)None

Asymptote rules

Vertical

Zeros of the denominator that do not cancel

Horizontal

Compare the numerator and denominator degrees

Oblique

Polynomial division when the degree difference is 1

Reference: This calculator supports numerator and denominator polynomials up to degree 2. A shared factor is reported as a removable hole instead of a vertical asymptote.

Frequently asked questions

What is a vertical asymptote?

A vertical asymptote is a line x = a that the function approaches when the denominator tends to zero and the factor does not cancel.

When does a horizontal asymptote exist?

If the numerator degree is lower, y = 0. If both degrees are equal, divide the leading coefficients.

What is an oblique asymptote?

An oblique asymptote is a slanted line found by polynomial division when the numerator degree is exactly one greater than the denominator degree.

Math Calculation Disclaimer

Results are estimates generated locally in your browser using standard mathematical formulas. They are for informational and educational purposes only and are not a substitute for verification in coursework, examinations or professional contexts requiring certified accuracy. VisionVix accepts no liability for decisions based on this tool's output.

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