Question

In which of the following fuction domain, range and codomain are same?

A. Greatest Integer Function

B. Signum Function

C. Identity Function

D. Modulus Function​

Answer 1

Answer:

A codomain is part of a function f if f is defined as a triple (X, Y, G) where X is called the domain of f, Y its codomain, and G its graph. The set of all elements of the form f(x), where x ranges over the elements of the domain X, is called the image of f.