The Largest Multiplier

Problem

Let a,b,m>0a, b, m > 0. The inequality

a2a2+b2+mba+b522\sqrt{\frac{a^2}{a^2+b^2}} + m\sqrt{\frac{b}{a+b}} \le \frac{5\sqrt2}{2}

holds for all a,b>0a, b > 0. Find the maximum value of mm.

Answer

Solution

Difficulty8/10
TopicsSubstitution, algebra, Estimation, inequality

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