Not quite right. If you set
Then take the derivative - don't forget to apply the chain rule:
So now you have:
You could have also done this by setting :
Always happy to help out a fellow ME!
I am looking at the following function, trying to understand what value I should be substituting for.
I am coming up with:
I believe this should give me:
More importantly, I am really struggling with the "why" part of this substitution. I must be missing something obvious.