Which of the functions are not performed by the Turing machine after reading a symbol?ans.none of the mentionedproceeds with the next instruction or haltsmoves the tape one cell left/rightwrites the symbol Previous Marked for Review Next

The Turing machine performs the following functions after reading a symbol:

1. Proceeds with the next instruction or halts: After reading a symbol, the Turing machine will either proceed to the next instruction in its set of instructions or it will halt its operations. This depends on the specific instructions given to the machine.

2. Moves the tape one cell left/right: The Turing machine has a tape that it reads from and writes to. After reading a symbol, it will move the tape one cell to the left or to the right. This is to ensure that it can continue reading the next symbol or write a new symbol in the correct location.

3. Writes the symbol: After reading a symbol, the Turing machine may write a new symbol on the tape. This is part of its ability to manipulate symbols based on its set of instructions.

Therefore, none of the functions mentioned are not performed by the Turing machine after reading a symbol.