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Prove that matrix [((b^(2)-a^(2))/(a^(2)...

Prove that matrix `[((b^(2)-a^(2))/(a^(2)+b^(2)),(-2ab)/(a^(2)+b^(2))),((-2ab)/(a^(2)+b^(2)),(a^(2)-b^(2))/(a^(2)+b^(2)))]` is orthogonal.

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