Question

Fin the domain of the function f(x)=x^2+7

Answer 1

all real numbers

Explanation:

Answer 2

Explanation:

Comment

You are going from a very small number (like - 100000) to a very large number (like + 100000).

But neither of those could be the answer. They are either not small enough or not large enough. The domain must look like this.

- ∞ < x < ∞

Answer: So the domain is all the real numbers.