0 0 votes true or false complent of cfl is decidable ? complement of recursive language is decidable? complement of REL is decidable? Theory of Computation + – eyeamgj 427 views answer comment Share Follow Print See all 2 Comments 2 2 Comments reply Anu007 commented Jun 22, 2018 reply Follow flag 1. The complement of CFL is decidable: Is it decidable whether the complement of a given CFL is a CFL? No, it is undecidable 2. The complement of recursive language is decidable: Is it decidable whether the complement of a given REC is a REC? Yes, it is decidable 3. The complement of REL is decidable: Is it decidable whether the complement of a given REL is a REL? No, it is undecidable 0 0 replyShare eyeamgj commented Jun 22, 2018 reply Follow flag thankyou 0 0 replyShare Please log in or register to add a comment.