https://drive.google.com/file/d/1OHhLi3M6olWJPTJCdwB-fKvGzZMxATrJ/view?usp=share_link
https://www.youtube.com/watch?v=ozZWVKlXUCE
https://www.youtube.com/watch?v=HaHsqDjWMLU
The chain rule is a formula for computing the derivative of the composition of two or more functions. It states that the derivative of the composition of two functions is equal to the product of the derivative of the outer function and the derivative of the inner function. The chain rule is an important tool in calculus and is used in a variety of applications, including optimization, physics, and engineering.