Question

what is the domain and range of identity function​

Answer 1

Answer:

For the identity function f(x)=x f ( x ) = x , there is no restriction on x . Both the domain and range are the set of all real numbers. ... For the quadratic function f(x)=x2 f ( x ) = x 2 , the domain is all real numbers since the horizontal extent of the graph is the whole real number line.

Answer 2

For the identity function f(x)=x f ( x ) = x , there is no restriction on x . Both the domain and range are the set of all real numbers. ... For the quadratic function f(x)=x2 f ( x ) = x 2 , the domain is all real numbers since the horizontal extent of the graph is the whole real number line.