Domain
Definition of Domain
- Domain of a relation is the set of all x-coordinates of the ordered pairs of that relation.
Examples of Domain
-
Domain of the relation {(3,4), (9,8), (4,5)} is {3, 4, 9}.
Solved Example on Domain
Find the domain of 
.
Choices:
A. 
B. (- 3, 3)
C. 
D. 
Correct Answer: A
Solution:
Step 1:
Step 2:
Step 3: By domain of a function, we mean the set of all possible input values for the function.
Step 4: Observe that the function 
is not defined only when 
.
Step 5: So, the domain for this function is .
Related Terms for Domain
- Relation
- Ordered Pairs
- Coordinates
Additional Links for Domain
