A Ratio on the Unit Circle

6/10trigonometryalgebra

Problem

Positive reals a,ba, b satisfy a2+b2=1a^2 + b^2 = 1. Find the range of

m=a3+b3+1(a+b+1)3.m = \frac{a^3 + b^3 + 1}{(a + b + 1)^3}.

Answer

Solution

Difficulty6/10
Topicstrigonometry, algebra

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