[Mod Says] From Fluther Help:
Homework Questions
Feel free to ask for help on your subject, but simply posting your homework question verbatim and expecting an answer is rude! We’re not here to do your homework for you.
It is not against the rules to ask homework questions. In general, the community expects that homework questions will demonstrate that the asker has already done some independent work on the problem, and responses may be removed if they just give away the answer instead of prompting the asker to work it out. Requesting and providing help, however, are both allowed. So while @Walodchy has clarified that this is not a homework question, it doesn’t matter in any case.