Question

What is the range of the function y = 2ˣ - 1 in interval notation?

Answer 1

When you graph the function, you see it has a horizontal asymptote at \(y=-1\) for small \(x\) and shoots up to infinity for large \(x\). The range is the set of all possible \(y\) values.

Answer 2

Domain = All Real #'s
Range = (-1, ∞)

Would you like an explanation as to why or is that good? :-)

Answer 3

Oh ok, no no that's perfect! Thank you!