Can the domain and range be the same?

1 Answer
Daniel L.
Jun 25, 2017

Yes. See explanation.

Explanation:

Yes.

The best examplaes may be polynomial functions.

If we consider a function like f(x)=x^3, we can say it is defined for all real numbers (i.e. the domain is D=RR).

Its range is also RR, because for any real y we can say, that the value is reached in a point x=root(3)(y)

Related questions
Impact of this question
8440 views around the world
You can reuse this answer
Creative Commons License