I have been stuck on a sentence in my book for a week. When this happens it tends to mean I am missing something obvious. I can ask a LLM to help. However they tend to just misunderstand my issues or just continually say the wrong thing.
Like in this picture here. This is exactly what I was doing. But I need to sign of dV/dx to be + no - to make it work.
the LLM did that, and then just kept saying it was working. It clearly wasn't.

