👉 In computational complexity theory, a concept known as "definability" refers to the ability of a computable function (a procedure that can be expressed in terms of other procedures) to return a truth value on its input. This means that if you provide it with an input, the function will always output the same result whether given the input is true or false. For example, consider the following function: ```python def f(x): # implementation goes here ``` If we run