Quadratic functions | Wiskunde op Tilburg University

Definition: A function of the form

$y(x)=ax^2+bx+c,$
where

$a$ ,

$b$ and

$c$ are numbers (

$a\neq 0$ ) is called a quadratic function.

Remark: For

$a=0$ this function is either linear (if

$b\neq 0$ ) or constant (if

$b=0$ ).

Example:

$g(x)=4x^2+8x+3$ is an example of a quadratic function.