# Calc1.68

From Example Problems

We could do this integral with partial fractions, but for instructive purposes let's use the method of trigonometric substitution.

At this point, we have to do a substitution again.

Now, we know and we need to know the value of . Using the well known trig identity, , we get that . So

Click here to see this integral done by partial fractions.

Click here to see this integral done by substitution.