Why can't we use the chain rule to take the derivative of x^x? I've heard people say that it's not a composite function, but why? - Quora
Chain Rule Of Derivatives For Composite Functions| Math Dot Com| | When to Use Chain Rule of Derivatives?: Chain rule of derivatives is one of the rule of derivatives for composite functions.It
![multivariable calculus - Second order derivative of a chain rule (regarding reduction to canonical form) - Mathematics Stack Exchange multivariable calculus - Second order derivative of a chain rule (regarding reduction to canonical form) - Mathematics Stack Exchange](https://i.stack.imgur.com/YYoni.png)