I'm working on an optional test review packet from my Precalculus teacher and out of the whole packet, only these three questions stumped me:

Question

1. Find the range of the function 2^(x^2 + 4).
2. Create a function that requires the given domain:
a) [5,0)
b) -4 ≤ x < -1 or 1 < x ≤ 4
Please help me understand how I would find the answer to the questions. Thanks!

Answer 1

I've just figured out question 1. Can someone please help me on question 2, parts a) and b), ASAP?

Answer 2

I'm confused as well. You can restrict any function's domain just by defining what it is, as in a piecewise function.

Answer 3

Ah ok, thanks!