SS1 First Term Further Mathematics Lesson Note – Mapping and Functions

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WEEK EIGHT

MAPPING AND FUNCTIONS

CONTENT

Definition OF Mapping and Functions

Types of Mapping and function

SUB TOPIC: DEFINITION AND PROPERTIES OF MAPPING AND FUNCTION

A mapping  is a rule which assigns every element in a set A to a distinct element in a set B, given that A and B are two non- empty sets. In set notation form, the rule which assigns an element  ϵ A a unique element  ϵ B, is called a mapping. The set A is called the Domain of the mapping while the set B is called the Co-domain.

The operative rule in all such assignment must be that “no child can have two fathers”, meaning, no one elements in the domain should be mapped to two elements in the co-domain.

If the rule which associates each element  ϵ A, a unique element  ϵ B is denoted by   the mapping between the set A and the set B can be

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