sin(2*x) x*cos(2*x)
-------- + ----------
4 2
$$\frac{x \cos{\left(2 x \right)}}{2} + \frac{\sin{\left(2 x \right)}}{4}$$
$$- x \sin{\left(2 x \right)} + \cos{\left(2 x \right)}$$
-(3*sin(2*x) + 2*x*cos(2*x))
$$- (2 x \cos{\left(2 x \right)} + 3 \sin{\left(2 x \right)})$$