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