What language does this Pushdown Automata (PDA) accept??

Exam tomorrow and the prof let us know a question that would be on it :). In the context of this diagram, L is eps...

How to Draw a Parse tree contains multiple statements in if condition??

I want to draw a parse tree have multiple statements if the condition is true, and multiple statements if the condit...

How can I determine if a language is context free or not??

How can I know whether the languages are context free or not? ...