Stage: 4 and 5 Challenge Level: 
Find the smallest integer solution to the following equation:
$$\frac {1}{x^2}+\frac {1}{y^2}=\frac {1}{z^2}$$
epsilons. Pythagorean triples. Manipulating algebraic expressions/formulae. Summation of series. Diophantine equations. Mathematical reasoning & proof. Short problems. alphas. Stage 5 - Reviewed 2012. Integers.
Published April 1999.
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