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Asymptote Formula

In analytic geometry, an asymptote of a curve is a line such that the distance between the curve and the line approaches zero as they tend to infinity. In some contexts, such as algebraic geometry, an asymptote is defined as a line which is tangent to a curve at infinity. There are two types of asymptote: one is horizontal and other is vertical. Below mentioned is asymptote formula.

Asymptote Formula

Solved Examples

Question 1: Find the asymptotes for $f(x) = \frac{2x^{2} + 2x}{x^{2}+1}$

We can see at once that there are no vertical asymptotes as the denominator can never be zero.
$x_{2}$ + 1 = 0
$x_{2}$ = –1 has no real solution
Now see what happens as x gets infinitely large:\[\lim_{x\rightarrow\infty}\;\frac{2x^{2}+2x}{x^{2}+1}\]

The method we have used before to solve this type of problem is to divide through by the highest power of x.

= $\LARGE\lim_{x\rightarrow\infty}\;\frac{2x^{2}+2x}{x^{2}+1}$

= $\LARGE \frac{\frac{2x^{2}}{x^{2}} + \frac{2x}{x^{2}}}{\frac{x^{2}}{x^{2}} + \frac{1}{x^{2}}}$

= $\LARGE\frac{2+0}{1+0}$

= $\LARGE2$

More topics in Asymptote Formula
Slant Asymptote Formula
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