/ 2 2 2 2 2 2 2 2 2 \
| 2 2*sin (x) 6*atan (cos(x))*cos (x) 2*atan (cos(x))*sin (x) 6*atan(cos(x))*cos(x) 8*atan (cos(x))*cos (x)*sin (x) 12*sin (x)*atan(cos(x))*cos(x)|
3*|atan (cos(x)) - -------------- - ----------------------- + ----------------------- + --------------------- - ------------------------------- + ------------------------------|*sin(x)
| 2 2 2 2 2 2 |
| / 2 \ 1 + cos (x) 1 + cos (x) 1 + cos (x) / 2 \ / 2 \ |
\ \1 + cos (x)/ \1 + cos (x)/ \1 + cos (x)/ /
----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
2
1 + cos (x)