Find the maximum or minimum value for each quadratic

MATHEMATICS · Multi-part · IB Diploma Programme · Mathematics: Applications and Interpretation · Calculus · Calculus

Problem

Find the maximum or minimum value for each quadratic, and the corresponding value of xx: (1) y=x2−2xy=x^2-2x (2) y=7−2x−x2y=7-2x-x^2 (3) y=8+2x−3x2y=8+2x-3x^2 (4) y=2x2+x−1y=2x^2+x-1 (5) y=4x2−x+5y=4x^2-x+5 (6) y=7x−2x2y=7x-2x^2

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