The domain of the following relation: r: {(3, 5), (8, 6), (2, 1), (8, 6)} is

Solution:

The given relation r: {(3, 5), (8, 6), (2, 1), (8, 6)} is a function because a function is a relation where each input in set X has only one output in set Y.

We will use the concept of set, relation, and function to find the domain.

For an ordered pair (x,y) that a set contain:

x = domain, y = range

The elements in set X are known as domain and elements in set Y are known as range.

In relation, x can have 2 or more than 2 ranges.

So, domain = first element of ordered pair

Given, ordered pair is r: {(3, 5), (8, 6), (2, 1), (8, 6)}

Domain = {3, 8, 2, 8}

Since the element 8 is occuring twice, domain = {3, 2, 8}

Therefore, the domain is {3, 2, 8}.

The domain of the following relation: r: {(3, 5), (8, 6), (2, 1), (8, 6)} is

Summary:

The domain of the relation: r: {(3, 5), (8, 6), (2, 1), (8, 6)} is {3, 2, 8}.

What is the domain of the following relation: r: {(3, 5), (8, 6), (2, 1), (8, 6)}.