I've noticed an increase in questions where the OP claims to have been detached from mathematics for a long time and provides zero effort in their question, here is an example. How should our community handle such questions in terms of upholding the standards of the site? Are there specific guidelines or approaches we should consider in these cases to maintain the quality of the content on our site?
I would vote to close. "I've been away from mathematics" may provide some context, but the obvious follow-up question is "then why do you need to solve this problem now? In what context did it arise? Why are you expected to solve it? What do you actually remember?" If none of these are addressed, then the question lacks sufficient context.
The example you point to also has another problem: it asks two separate questions in the same post. Asking for a guide to review calculus for someone who has been away for a while is a stand-alone question (and one that requires providing context about what parts of calculus they need now and why, as the appropriateness of the source will depend on the intended use).
So I would comment and ask for that context, and absent that context simply vote to close, just like with any other "Here's a problem I don't know how to do, please do it for me" question. Doesn't matter why one posts such a question with no context, the only thing that matters is that it was posted.
Before downvoting or voting to close we probably should write out something like: "hey you your question is bad because of X you need to do Y to fix it. this is being downvoted/closed until Y happens and then we can re-open/reconsider it. It's just simply how this website works don't take it personally, we all have had to learn these rules the hard way :)"
I'm not a major member of this community but it seems that people here love downvoting without even considering the post. This site was made to help people, so why are we so quick to shut them down? Maybe instead of closing the post or downvoting them, why not point them in the right direction, help them instead of just closing the post which benefits no one.