Khan Academy Static

Improper integrals are like definite integrals, only unbounded from the left and/or right. And yes, some of them have finite values. An unbounded area with a finite size? That's calculus to you!

5721_Introduction_to_improper_integrals.html

5723_Divergent_improper_integral.html

5722_Improper_integral_with_two_infinite_bounds.html