In this tutorial we shall drive the integration of square root of a^2+x^2, and solve this integration with the help of integration by parts methods.
The integral of is of the form
This integral can be written as
Here first function is and second function will be
Using formula for integration by parts, we have
Equation (i) becomes using above formula, we have
Putting the given integral , we get
But using the relation and we know that we have