1. Determine the Turing machine that computes the function:   f(n) = 4n+3 The machine should therefore start with a natural number n on the tape and stop with the number 4n+3 on it the tape   . (Hint: Think binary.)

Database System Concepts
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Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
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1. Determine the Turing machine that computes the function:

 

f(n) = 4n+3 The machine should therefore start with a natural number n on the tape and stop with the number 4n+3 on it the tape

 

. (Hint: Think binary.)

 

2. Determine a Turing machine for creating palindromes. That is, if we start with w on the tape, then we should end with ww on the tape, where w is the reversed string of w.

 

E.g. if we start with |-011 on the tape, then we should stop with |-011110 on the tape

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