Function notation

Function notation is a way to represent mathematical functions, which are relationships between inputs and outputs. In function notation, a function is typically written as \( f(x) \), where \( f \) is the name of the function and \( x \) is the input. The output is determined by applying the function to the input. For example, if \( f(x) = x + 2 \), and you input 3, the output would be 5, because \( 3 + 2 = 5 \). This notation helps clearly express how different values relate through a specific rule or operation.