/ 2 2 2 2 \
| 6*cos (2*x) 2*sin (2*x) 8*cos (2*x)*sin (2*x)|
8*|1 - ------------- + ------------- - ---------------------|*sin(2*x)
| 2 2 2 |
| 1 + cos (2*x) 1 + cos (2*x) / 2 \ |
\ \1 + cos (2*x)/ /
----------------------------------------------------------------------
2
1 + cos (2*x)
$$\frac{8 \left(1 + \frac{2 \sin^{2}{\left(2 x \right)}}{\cos^{2}{\left(2 x \right)} + 1} - \frac{6 \cos^{2}{\left(2 x \right)}}{\cos^{2}{\left(2 x \right)} + 1} - \frac{8 \sin^{2}{\left(2 x \right)} \cos^{2}{\left(2 x \right)}}{\left(\cos^{2}{\left(2 x \right)} + 1\right)^{2}}\right) \sin{\left(2 x \right)}}{\cos^{2}{\left(2 x \right)} + 1}$$