Question

What is the domain and range of f left parenthesis x right parenthesis= x2 + 4?

Answer 1

Answer:

The domain is all real numbers or (-infinity, +infinity)

The range is all numbers greater than or equal to 4 or (4,+infinity)

Hope this helped! :)

Answer 2

ANSWER

$(-∞,+∞)$

EXPLANATION

The given function is

$f(x) = {x}^{2} + 4$

This is a polynomial function.

Polynomial functions are defined for all real values of x.

For every x-value, there is a corresponding y-value.

Therefore the domain of the given function is all real numbers.

We can rewrite this as:

(-∞,+∞).