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sqrt(60*integral from 0 to 1/60 of ((10/8*cos(2*pi*60*t)+10/8*cos(2*pi*1500*t))^2) dt)
sqrt(60*integral from 0 to 1/60 of ((10/8*cos(2*pi*60*t)+10/8*cos(2*pi*1500*t))^2) dt)
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