関連ワード:  integration of sin x cos 3x dx    integration of sin 2 x cos 3 x dx    integral of sin 4 x cos 3 x dx    integration of sin x cos 2x sin 3x dx    integrate √ sin x cos 3x dx    integrate 1 sin x.cos^3x dx    integration of sin x cos x 3x 3 dx    integration of x cos 3x sinx dx    integrate sin 4 x * cos 3 x dx from 0 to pi 2    integrate sin 5 x cos 3 x dx