関連ワード:  how to integrate sin^2x cos^2x    how to integrate sin 2x cos 2x    how to solve integral of sin 2x cos 2x    integrate sin 2x cos 2x dx    integrate sin 2x cos 2x sinxcosx    integrate sin 2x cos 2x 2    integral sin 2x cos 2xdx    integrate sin 2x cos 2 x    how to integrate sin^2(2x)