A Turing machine with doubly infinite tape is a Turing machine with a tape that is unbounded at both ends. The tape is initially filled with infinitely many blanks to the left and the right of the input string. The machine still starts with the tape head over the leftmost input symbol on the tape, (which will have infinitely many blank symbols to the left of it. Show that this type of Turing machine recognizes the class of Turing-recognizable languages. Show transcribed image text A Turing machine with doubly infinite tape is a Turing machine with a tape that is unbounded at both ends. The tape is initially filled with infinitely many blanks to the left and the right of the input string. The machine still starts with the tape head over the leftmost input symbol on the tape, (which will have infinitely many blank symbols to the left of it. Show that this type of Turing machine recognizes the class of Turing-recognizable languages.

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Answer to A Turing machine with doubly infinite tape is a Turing machine with a tape that is unbounded at both ends. The tape is i…