please, help me I have exam after tomorrow and I couldn't figure it out. thanks in advance!!!! L = language
closed as off topic by Tsuyoshi Ito, Sadeq Dousti, Robin Kothari, Suresh Venkat♦ Feb 14 '11 at 3:53
Questions on Theoretical Computer Science Stack Exchange are expected to relate to theoretical computer science within the scope defined in the FAQ. Consider editing the question or leaving comments for improvement if you believe the question can be reworded to fit within the scope. Read more about closed questions here.