Web Reference: Function notation expresses a function by assigning it a name, typically f, g, or h, followed by its input variable enclosed in parentheses. The expression f(x) is read as "f of x" and represents the output value of the function f when the input is x. If you are dealing with more than 1 function, you still have to use y. However, with the function notation, you could use g (x) or h (x) to indicate other functions of x. 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 function name, such as f (x), where f represents the function's name, and x is the input variable.
YouTube Excerpt: Learn how to evaluate functions in this video tutorial by Mario's Math Tutoring. We discuss
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