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State true or false:\nStatement: Using a two track tape, we can use a semi infinite tape to simulate an infinte tape.(a) true(b) falseThis question was addressed to me during a job interview.This interesting question is from Multistack Machines, Counter Machines topic in portion Introduction to Turing Machines of Automata Theory

Answer»

Correct answer is (a) true

The EXPLANATION: A TM with a semi-infinite tape MEANS that there are no CELLS to the LEFT of the initial head position. A TM with a semi infinite tape simulates a TM with an infinite tape by using a two-track tape.



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