I am trying to implement a context-free grammar for $L=\{a^n b^m \mid n \neq 2m\}$.I have a difficulty trying to implement it because I don't know how to ensure that $n \neq 2m$.I can easily implement $n=2m$ but the other way around doesn't seem intuitive. How can I approach this problem?
Implement Context-Free Grammar for $L=\{a^n b^m \mid n \neq 2m\}$
context free
Hint: A string of the form $a^nb^m$ where $n \neq 2m$ can be eitherA string with too many $a$'s, orA string with too few $a$'sCreate production rules for each of these cases.