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minimize (-(2 cot(2 x) (-2+sin(2 x)))/((cos(x)-sin(x))^3 (2+sin(2 x))))^3/2 for 0<x<2*π
minimize (-(2 cot(2 x) (-2+sin(2 x)))/((cos(x)-sin(x))^3 (2+sin(2 x))))^3/2 for 0<x<2*π
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