Solution:
In an input/output table, all outputs are 0, regardless of the input.
This means that
The value of x can be
Step 1:
Try the first function, we will have
Step 2:
Try the second function
Step 3:
Try the third function
This function is said to be undefined as the denominator is equal to 0
Step 4:
Try the fourth equation
Hence,
The final answer is