Question

What is the domain of a function?

(a) the maximal set of numbers for which a function is defined

(b) the maximal set of numbers which a function can take values

(c) it is a set of natural numbers for which a function is defined

(d) none of the mentioned

I had been asked this question during a job interview.

I want to ask this question from Domain and Range of Functions topic in portion Basic Structures: Sets, Functions, Sequences, Sums and Matrices of Discrete Mathematics

Answer 1

Correct answer is (a) the maximal set of numbers for which a function is defined

Best explanation: Domain is the set of all the numbers on which a function is defined. It may be real as well.