y = X2 - 3x + 2, \(\frac{dy}{dx}\) = 2x - 3 at turning pt, \(\frac{dy}{dx}\) = 0 ∴ 2x - 3 = 0 ∴ x = \(\frac{3}{2}\) \(\frac{d^2y}{dx^2}\) = \(\frac{d}{dx}\)(\(\frac{d}{dx}\)) = 270 ∴ ymin = 2\(\frac{3}{2}\) - 3\(\frac{3}{2}\) + 2 = \(\frac{9}{4}\) - \(\frac{9}{2}\) + 2 = -\(\frac{1}{4}\)