👉 In mathematical terms, an "exactable" is a function that can be expressed in terms of its inputs and outputs as precisely as possible. This means that every input has exactly one output value (or a zero output). In other words, all outputs are unique to each input. For example, if we have the function f(x) = x^2 + 3x - 4, then it is exactable because for every input x, there is only one output y that satisfies this