Question

what is relation and functions ?​

Answer 1

Functions. A function is a special type of relation where every input has a unique output. Definition: A function is a correspondence between two sets (called the domain and the range) such that to each element of the domain, there is assigned exactly one element of the range.

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Answer 2

Question: What is the Relation?

Answer:

Let us consider two sets A and B. Then a relation R from Set A into Set B is defined as the subset of A × B. The relation can be classified into three different types, such as:

Reflexive Relation

Symmetric Relation

Transitive Relation

What is a Function?

Answer:

A function is defined as the relation between two sets, in which every element in the set 1 associate to the elements in set 2. In other words, if “f” is a function from A to B, then every element in the set B is the image of an element in set A. The different types of functions are:

One to One function

One to Many functions

Onto function

One to one Correspondence