関連ワード:  integral of sin x cos 2x    integral of sin x cos 2x dx    integral of sin x cos 2    antiderivative of sin x cos^2x    integral of sin x 1 cos 2x    integral of sin x 1 cos 2x dx    integral of sin 2 x cos 2x    integration of sin x cos 2x sin 3x dx    integration of sin x cos 2x sin 3x    integration of x sin 2x cos 5x dx