👉 In mathematics, a fountainwise is a condition that a function f(x) must satisfy in order for all values of x to be within a certain range. This means that every element of the domain of f(x) will have an equivalent value in the range of f(x), and vice versa. For example, consider the function f(x) = 3x - 2 when x is in the interval [-1, 4]. For all values of x within this interval, f(x)
