Aug 13, 2025 · In this section we will cover function notation/evaluation, determining the domain and range of a function and function composition.

Quadratic functions are versatile and play a fundamental role in mathe-matics and various scientific disciplines. Understanding their properties, equations, and applications is crucial to …

When the x value of each pair of coordinates is different, the relation is called a function. A function is a relation in which each member of the domain is paired with exactly one element …

An identity function, also called an identity relation or identity map or identity transformation, is a function that always returns the same value that was used as its argument.

The algebraic operations of addition, subtraction, multiplication and division etc. can be performed on two real valued functions suitably in the same manner as they are performed on two real …

About this unit 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 here! …

Function notation is the way a function is written. It is meant to be a precise way of giving information about the function without a rather lengthy written explanation.

Nov 23, 2025 · Learn about functions and how to use them for your IGCSE maths exam. This revision note covers the key concepts and worked examples.

Rough Idea of a Function: A function is an object f that takes in an input and produces exactly one output. f (This is not a complete definition – we'll revisit this in a bit.)

We can write a function as the equation y = -2x + 3, where y is the output that depends on the input, x. In this example, the function has a discrete domain of D: {-3, 0, 1, 5}.