line integral, independence on the path and green’s theorem
https://drive.google.com/file/d/19_kdKjIWqU5X8zIvgYc5VYKLk001lpNJ/view
https://drive.google.com/file/d/1AasXdSF94CKPJ7iKqwFg1Yy5CbDI-wDi/view
https://www.youtube.com/watch?v=SGmUMEU8HqM&t=39s
https://www.youtube.com/watch?v=jx4ZeVPkEo8&pp=ygUabGluZSBpbnRlZ3JhbCBtb2hhbWVkIHNhYWQ=
A line integral is a type of integral that integrates a scalar or vector field along a curve. It is used to calculate work done by a force along a path or to calculate the circulation of a fluid around a closed curve.