Question

How do you do this?




State the domain and range of the function f(x) = x2 - 1.

Answer 1

Domain

f(x)=x^(2)-1

The domain of the rational expression is all real numbers except where the expression is undefined. In this case, there is no real number that makes the expression undefined.
All real numbers

Answer 2

what about the range? is it >= -1 or <= -1?

Answer 3

got it, it is >= -1 for range, THANK YOU WOLFRAMALFA!!!!!!!!!!

Answer 4

this is the range {f element R : f>=-1}