/ 2 \ | cos (3*x) | 9*|1 - -------------|*sin(3*x) | 2 | \ 1 - sin (3*x)/ ------------------------------ _______________ / 2 \/ 1 - sin (3*x)
/ 2 2 2 2 \ | cos (3*x) 3*sin (3*x) 3*cos (3*x)*sin (3*x)| 27*|1 - ------------- + ------------- - ---------------------|*cos(3*x) | 2 2 2 | | 1 - sin (3*x) 1 - sin (3*x) / 2 \ | \ \1 - sin (3*x)/ / ----------------------------------------------------------------------- _______________ / 2 \/ 1 - sin (3*x)