# Functions: Domain, Range, Mappings

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Functions : Domain - Range : tutorial 1
What is the domain and range of a function.
This tutorial introduces you to this concept by looking at linear and quadratic functions.
f(x) = 2x -1, -1 ≤ x ≤ 1
f(x) = 2x -1
g(x) = x2
Functions : Domain - Range : tutorial 2
This tutorial looks at square root and reciprocal functions.

Definition of a function. Domain and range of functions.
A-Level Edexcel C3 June 2009 Q5(c)
Worked solution to this question on range of a function.

A-Level Edexcel C3 June 2009 Q5(e) Worked solution to this question on domains.

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