MathDB
Math Prize 2010 Problem 1

Source:

November 14, 2010

Problem Statement

If aa and bb are nonzero real numbers such that ab\left| a \right| \ne \left| b \right|, compute the value of the expression (b2a2+a2b22)×(a+bba+baa+b)×(1a2+1b21b21a21b21a21a2+1b2). \left( \frac{b^2}{a^2} + \frac{a^2}{b^2} - 2 \right) \times \left( \frac{a + b}{b - a} + \frac{b - a}{a + b} \right) \times \left( \frac{\frac{1}{a^2} + \frac{1}{b^2}}{\frac{1}{b^2} - \frac{1}{a^2}} - \frac{\frac{1}{b^2} - \frac{1}{a^2}}{\frac{1}{a^2} + \frac{1}{b^2}} \right).