Bounds for $M$

★ 5/10Extrema Substitution algebra inequality

Problem

Real numbers $a, b$ satisfy $a^2 + ab + b^2 = 3$ , and $M = a^2 + b^2 - ab$ . Find the minimum and maximum values of $M$ .

Answer

Solution

Difficulty	5/10
Topics	Extrema, Substitution, algebra, inequality

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