Thank you for clearing that up. I believe that is true but I am still confused about something. From what I know about the chain rule it is the derivative of the whole part multiplied by the derivative of the inside.

Example:

https://www.math.ucdavis.edu/~kouba/....html#SOLUTION1

In the case

my question is that

does not appear to be a derivative in this case. So

clearly is a derivative but

does not look like one. Is there something I don't understand maybe about the chain rule?

Thanks for any responses....