Function Notation and Evaluation smashville247.net Topical outline  Algebra 1 summary  MathBits" Teacher resources Terms that Use call Person: Donna Roberts
Function notation is the method a function is written. It is meant to it is in a precise way of providing information about the role without a rather an extensive written explanation.
Traditionally, attributes are described by single letter names, such as f, g, h and for this reason on. Any kind of letter(s), however, may be supplied to name a function. Examples:
The f (x) notation is another method of representing the yvalue in a function, y = f (x). The yaxis may even be labeled as the f (x) axis, when graphing. notified pairs might be created as (x, f (x)), rather of (x, y).
The most popular duty notation is f (x) i beg your pardon is read "f that x". This is not the multiplication of f times x. You are watching: Evaluate the function rule for the given value . 
Note: The notation f : X → Y tells us that the function"s surname is "f " and its ordered pairs are developed by an element x indigenous the collection X, and also by an element y native the set Y. (The arrow → is review "is mapped to".) it permits for individual duty names to prevent confusion regarding which duty is being examined. names have different letters, such together f (x) and g (x). The graphing calculator walk distinctive function naming v Y1, Y2, ... it quickly identifies the independent change in a problem. f (x) = x + 2b + c, where the change is "x". it conveniently states which element of the role is to it is in examined. Find f (2) when f (x) = 3x, is the same as saying, "Find y as soon as x = 2, for y = 3x." (the bar arrow way the facet "x is mapped/matched come 3x + 2")
