👉 Intervaling is a method in mathematics used to describe intervals of values for which a function or relation is defined. It involves finding the range of values that are not included within an open interval, and then creating a closed interval around each value in this range. For example, consider the function f(x) = x^2 - 4x + 3, where x can take on any real number. If we want to find the intervals in which this function is defined, we would first identify