Question 17 • Algebraic Reasoning
The inverse function is f⁻¹(x) = −√(x − 2), whose outputs are never positive. Those outputs become the domain of f, so f(x) = x² + 2 is restricted to x ≤ 0. It crosses the y-axis at (0, 2), and its range is [2, ∞), so the range is limited; (0, 2) is a minimum, not a maximum.
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