関連ワード:  integral of sin 4 x 2    integration of sin pi 4 x 2    integrate sin(4-x^2)dx    integral of sin 4x x 2    integral of sin 4 x cos 2 x    integral of sin 4 x cos 2 x dx    integration of sin inverse x 2 4 x 2    integral of sin x 2    integration of sin 4x 2 dx    integral of sin 2x cos 4 x