Every now and then someone asks a "homework" and "mathy" question which gets held or closed because it's homework and math. Here's a recent example. As worded the question is definitely a "do my homework for me" question and should be held. However, when I read it I think
Gee, yeah, I it would be nice to have some resources on this site about how to approach problems like this. As a physicist, I frequently have to deal with mathematical expressions like this one and it's super convenient to have some basic formulae and guiding words lying around so I know what direction to go in and not waste four hours going down blind alleys. In short, as a physicist, I want an answer to this kind of question at my fingertips.
So, what do we do? It's not obvious how to record this information as a question which conforms to the site rules. One imagines asking something like "what is the BCH formula used for?", but that's too vague and doesn't have a well defined correct answer. You could try "What kind of formula should I use to solve this kind of expression?" but that's not a physics question. One could then try to artificially inject physics into what is really a math question, but that degrades the clarity of the information and not calling a spade a spade makes my pedagogy hurt.