The straight line y = k x + b is the oblique asymptote of the function f(x), if the following condition is hold:

On the basis of the condition given above, one can determine the coefficients k and b of the oblique asymptote of the function f(x):

<=>

then

and

Thus the straight line y = k x + b is the oblique asymptote of the function f(x) if and only if the finity limits exist

and

To find oblique asymptotes of your function, you can use our free online calculator, based on the Wolfram Alpha system.

Oblique asymptotes calculator

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