1. Problem statement: The user sent a brief greeting, "Hi", with no question or topic specified. 2. Response: Hello! I am your math TA and tutor, ready to help with math, physics, chemistry, or programming questions. Please tell me which topic or paste the problem you want help with. 3. How I can help: I can explain concepts step-by-step, solve equations, provide examples, or create practice problems. Tell me the level (basic, intermediate, advanced) and any constraints.