関連ワード:  what is the integration of cos 4x    what is the integration of cos 4x dx    what is the integral of cos 2 4x    what is the integration of sin 4x cos 4x    what is the integration of sin 3x cos 4x    what is the integration of 1 sin 4x cos 4x    what is the integral of sin^4x    what is the integration of 4x    what is the integration of cosx    what is the integral of cos^-1x