4

I’m not sure what you mean by "4." Do you want:

• me to solve problem #4 from a set you have (please paste the problem statement)?
• a 4th problem created on a topic you’re studying?
• a quick 4-question mini-quiz on a subject and level you specify?

Tell me the subject (e.g., calculus, linear algebra, physics), the level (undergrad year, high school AP, etc.), and either paste the problem or specify the topic, and I’ll tailor the help.