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CFL Computer Theory Question: Part 1: Find a CFG for the language with all words that start with a letter a. Find a CFG for

CFL Computer Theory Question:

Part 1:

Find a CFG for the language with all words that start with a letter a. Find a CFG for the language with all words that are of the form a^nb^n .

Part 2: Find a CFG for the language with all words that start with a letter a or are of the form a^nb^n . Is the language defined in (3) a regular language? Why?

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