Question

What is the range of the function f(x) = 3x^2 - 2?

Answer 1

[-2,positive infinity)

{y|y
`\geq`-2}

Answer 2

[-2, infinity)

Explanation:

The range of x^2 is [0, infinity).

The range of 3x^2 is the same as above.

The range of 3x^2 - 2 is [-2, infinity).