A function is a rule that is applied to one set of values to give another set of values. A function can be illustrated on a graph - points are plotted as coordinates and joined by either a ...

How to Graph a Function in Excel. A mathematical function is a formula that takes an input, x, applies a set of calculations to it, and produces an output called y. By calculating a function at a ...

C. E. Rickart, The Maximal Ideal Space of Functions Locally Approximable in a Function Algebra, Proceedings of the American Mathematical Society, Vol. 17, No. 6 (Dec., 1966), pp. 1320-1326 ...