# Can a rational function have no asymptote?

## Can a rational function have no asymptote?

Asymptotes of Rational Functions A rational function has at most one horizontal or oblique asymptote, and possibly many vertical asymptotes. Vertical asymptotes occur only when the denominator is zero. If n>m , then there is no horizontal asymptote (However, if n=m+1 n = m + 1 , then there exists a slant asymptote).

## Can a graph have no asymptotes?

Finding Horizontal Asymptote A given rational function will either have only one horizontal asymptote or no horizontal asymptote. Case 1: If the degree of the numerator of f(x) is less than the degree of the denominator, i.e. f(x) is a proper rational function, the x-axis (y = 0) will be the horizontal asymptote.

How do you know if there are no asymptotes?

The horizontal asymptote of a rational function can be determined by looking at the degrees of the numerator and denominator.

1. Degree of numerator is less than degree of denominator: horizontal asymptote at y = 0.
2. Degree of numerator is greater than degree of denominator by one: no horizontal asymptote; slant asymptote.

Why there is no vertical asymptote?

The vertical asymptotes come from the zeroes of the denominator, so I’ll set the denominator equal to zero and solve. Since the denominator has no zeroes, then there are no vertical asymptotes and the domain is “all x”.

### Which function has no asymptote?

The rational function f(x) = P(x) / Q(x) in lowest terms has no horizontal asymptotes if the degree of the numerator, P(x), is greater than the degree of denominator, Q(x).

### When there is no horizontal asymptote?

To find horizontal asymptotes: If the degree (the largest exponent) of the denominator is bigger than the degree of the numerator, the horizontal asymptote is the x-axis (y = 0). If the degree of the numerator is bigger than the denominator, there is no horizontal asymptote.

Can a graph of a rational function have no vertical asymptote?

Can a graph of a rational function have no vertical asymptote? There is no vertical asymptote if the degree of the numerator of the function is greater than the degree of the denominator It is not possible. Rational functions always have vertical asymptotes. Click to see full answer

How do you graph a rational function?

To graph a rational function, find the asymptotes and intercepts, plot a few points on each side of each vertical asymptote and then sketch the graph. Vertical asymptotes are “holes” in the graph where the function cannot have a value.

## What are asymptotes and holes?

Asymptotes, Holes, and Graphing Rational Functions Holes It is possible to have holes in the graph of a rational function. Before putting the rational function into lowest terms, factor the numerator and denominator. If there is the same factor in the numerator and denominator, there is a hole. Set this factor equal to zero and solve.

## How do you find the asymptote of a graph?

If the numerator is one degree greater than the denominator, the graph has a slant asymptote. Using polynomial division, divide the numerator by the denominator to determine the line of the slant asymptote. Finding Intercepts. To find x and y intercepts, set each variable equal to zero and solve in turn. Plotting Points.