/ 2 \
2*\(-1 + 2*cos(2*x)) *DiracDelta(x - sin(2*x)) + 2*sign(x - sin(2*x))*sin(2*x)/
-------------------------------------------------------------------------------
pi
$$\frac{2 \left(\left(2 \cos{\left(2 x \right)} - 1\right)^{2} \delta\left(x - \sin{\left(2 x \right)}\right) + 2 \sin{\left(2 x \right)} \operatorname{sign}{\left(x - \sin{\left(2 x \right)} \right)}\right)}{\pi}$$
/ 3 \
-2*\(-1 + 2*cos(2*x)) *DiracDelta(x - sin(2*x), 1) - 4*cos(2*x)*sign(x - sin(2*x)) + 12*(-1 + 2*cos(2*x))*DiracDelta(x - sin(2*x))*sin(2*x)/
--------------------------------------------------------------------------------------------------------------------------------------------
pi
$$- \frac{2 \left(\left(2 \cos{\left(2 x \right)} - 1\right)^{3} \delta^{\left( 1 \right)}\left( x - \sin{\left(2 x \right)} \right) + 12 \left(2 \cos{\left(2 x \right)} - 1\right) \sin{\left(2 x \right)} \delta\left(x - \sin{\left(2 x \right)}\right) - 4 \cos{\left(2 x \right)} \operatorname{sign}{\left(x - \sin{\left(2 x \right)} \right)}\right)}{\pi}$$