Show that the following problem i undecidable: Input: A Turing machine M. Output: Yes if M...

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Programming

Show that the following problem i undecidable:

Input: A Turing machine M. Output: Yes if M eventually haltswhen started on a blank tape, no otherwise

Input: A Turing machine M and a tape symbol a. Output: Yes if Meventually writes a when started on an blank tape, nootherwise.

Input: A Turing machine M. Output: Yes if M ever writes anonblank symbol when started on a blank tape, No otherwise.

Input: A Turing machine M and a string w over the input alphabetof M. Output: Yes if M ever moves to the left when started onw.

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