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11 December, 01:56

What is the domain of the relation { (3, 4), (4, 3), (4, 4), (5, 2) }?

A) {2, 3, 4, 5}

B) {3, 4, 5}

C) {4}

D) {2, 3, 4}

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Answers (2)
  1. 11 December, 02:03
    0
    B) {3, 4, 5}

    Step-by-step explanation:

    Domain: All values that can go into a function or a relation as input are called domain. When we enter these values into a function we get range of the function.

    Therefore if we write the relation in the ordered pair form of (x, y) all x values are domain.

    In the given relation { (3, 4), (4, 3), (4, 4), (5, 2) }, 4 appears twice but we will write it only once because of the definition of function i. e. function is a process or a relation that associates each element x of a set X, the domain of the function, to a single element y of another set Y
  2. 11 December, 02:09
    0
    Choice B is correct answer.

    Step-by-step explanation:

    We have given a relation.

    { (3, 4), (4, 3), (4, 4), (5, 2) }

    We have to find the domain of above relation.

    If f is a function from X to Y then X is called the domain of f and Y is called range of f.

    Domain is defined as the input of function.

    Hence, the input values of given function is:

    3,4,4,5

    Now, dom f = {3,4,5} which is the answer.
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