# Limits at Positive Infinity with Radicals

In this tutorial we shall discuss an example relating with limit at positive infinity with radial form of function, i.e. .

Let us consider an example

By rationalizing, we have

We divide the numerator and denominator of the fraction by . Since we are considering only negative values of and for , so using these values, we have

Using the relation , we have

By applying limits, we have