関連ワード:  integration of x 2 sin 3x dx    integration of x 2 sin 3x    evaluate integration of x 2 sin 3x dx    integration of cos 2 x sin 3x dx    integration of 3 cosec 2 x 2 sin 3x    integration of cos 2 x sin 3 x    integration of 3 cos x 2 x 2 sin 3x    integration of x cos 6x 3x 2 sin 6x    integration of x + cos6x / 3x2 + sin6x dx    integration of sin 3x cos 2 x