関連ワード:  integrate 1 2 sin 2 x dx from 0 to pi 4    integrate x * sin x )/( 1 cos 2 x dx from 0 to pi pi 2 )/ 4    integration of sin x limit 0 to pi/2    integration of sin x limit 0 to pi  
結果 : integrate 1 2 sin 2 x dx from 0 to pi 4