Find the values of $x^2$ for the given value of x. x < 3

[0, ∞) (0, ∞) [0, ∞] (-∞, ∞)

[0, ∞)

(i) When x < 3, we have $x ∈ (-∞, 0) ∪ [0, 3)$ for $x ∈ [0, 3), x^2 ∈ [0, 9)$ for $x ∈ (-∞, 0), x^2 ∈ (0, ∞)$ ⇒ for x < 3, $x^2 ∈ [0, 9) ∪ (0, ∞)$ $⇒ x ∈ [0, ∞)$