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(2*sqrt(0.9(0.9-0.5)(0.9-0.5)(0.9-0.8))+0.6*10^(-3)*(0.5+0.5+0.8))*0.2*10^(-3)
(2*sqrt(0.9(0.9-0.5)(0.9-0.5)(0.9-0.8))+0.6*10^(-3)*(0.5+0.5+0.8))*0.2*10^(-3)
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