f (x) " f (x) = ... " is the classic way of writing a function. And there are other ways, as you will see!

Apr 24, 2017 · You write functions with the function name followed by the dependent variable, such as f (x), g (x) or even h (t) if the function is dependent upon time. You read the function f (x) as "f of x" …

Check out Get ready for Algebra 1. A function is like a machine that takes an input and gives an output. Let's explore how we can graph, analyze, and create different types of functions. Unit guides are …

Some functions are defined by mathematical rules or procedures expressed in equation form. If it is possible to express the function output with a formula involving the input quantity, then we can define …

Jul 23, 2025 · Function notation is a precise and simplified way to express the relationship between inputs and outputs. Instead of using the typical y = format, function notation replaces y with a …

Commonly used for function notation is f (x) which is read as ‘ f of x ’. This means f (x) is the output which occurs by applying the process of f to the input x. However, any letter can be used to name the …

Nov 13, 2019 · When you write $f (x) = x^ {2}$, you are saying that the application of $f$ at an element $x$ is given by $x^ {2}$; in other words, you are evaluating $f$ at some $x$.