How to Set Up Double Integrals

Double integrals can be used to find the volume under a surface, but how exactly do they work and how do you set one up? ~~~ This video was funded by Texas A&M University as part of the Enhancing Online Courses grant. ~~~ The animations in this video were mostly made with a homemade Python library called "Morpho". You can find the project here: https://github.com/morpho-matters/morpholib