2 4
6*atan (2*x)*sin (3*x) 3 3
---------------------- + 12*atan (2*x)*sin (3*x)*cos(3*x)
2
1 + 4*x
$$12 \sin^{3}{\left(3 x \right)} \cos{\left(3 x \right)} \operatorname{atan}^{3}{\left(2 x \right)} + \frac{6 \sin^{4}{\left(3 x \right)} \operatorname{atan}^{2}{\left(2 x \right)}}{4 x^{2} + 1}$$
/ 2 \
2 | 2 / 2 2 \ 2*sin (3*x)*(-1 + 2*x*atan(2*x)) 12*atan(2*x)*cos(3*x)*sin(3*x)|
12*sin (3*x)*|- 3*atan (2*x)*\sin (3*x) - 3*cos (3*x)/ - -------------------------------- + ------------------------------|*atan(2*x)
| 2 2 |
| / 2\ 1 + 4*x |
\ \1 + 4*x / /
$$12 \left(- 3 \left(\sin^{2}{\left(3 x \right)} - 3 \cos^{2}{\left(3 x \right)}\right) \operatorname{atan}^{2}{\left(2 x \right)} + \frac{12 \sin{\left(3 x \right)} \cos{\left(3 x \right)} \operatorname{atan}{\left(2 x \right)}}{4 x^{2} + 1} - \frac{2 \left(2 x \operatorname{atan}{\left(2 x \right)} - 1\right) \sin^{2}{\left(3 x \right)}}{\left(4 x^{2} + 1\right)^{2}}\right) \sin^{2}{\left(3 x \right)} \operatorname{atan}{\left(2 x \right)}$$
/ / 2 2 \ \
| 3 | 1 2 12*x*atan(2*x) 16*x *atan (2*x)| |
| 2*sin (3*x)*|-------- - atan (2*x) - -------------- + ----------------| |
| | 2 2 2 | 2 / 2 2 \ 2 |
| 3 / 2 2 \ \1 + 4*x 1 + 4*x 1 + 4*x / 27*atan (2*x)*\sin (3*x) - 3*cos (3*x)/*sin(3*x) 36*sin (3*x)*(-1 + 2*x*atan(2*x))*atan(2*x)*cos(3*x)|
24*|- 9*atan (2*x)*\- 3*cos (3*x) + 5*sin (3*x)/*cos(3*x) + ----------------------------------------------------------------------- - ------------------------------------------------ - ----------------------------------------------------|*sin(3*x)
| 2 2 2 |
| / 2\ 1 + 4*x / 2\ |
\ \1 + 4*x / \1 + 4*x / /
$$24 \left(- 9 \left(5 \sin^{2}{\left(3 x \right)} - 3 \cos^{2}{\left(3 x \right)}\right) \cos{\left(3 x \right)} \operatorname{atan}^{3}{\left(2 x \right)} - \frac{27 \left(\sin^{2}{\left(3 x \right)} - 3 \cos^{2}{\left(3 x \right)}\right) \sin{\left(3 x \right)} \operatorname{atan}^{2}{\left(2 x \right)}}{4 x^{2} + 1} - \frac{36 \left(2 x \operatorname{atan}{\left(2 x \right)} - 1\right) \sin^{2}{\left(3 x \right)} \cos{\left(3 x \right)} \operatorname{atan}{\left(2 x \right)}}{\left(4 x^{2} + 1\right)^{2}} + \frac{2 \left(\frac{16 x^{2} \operatorname{atan}^{2}{\left(2 x \right)}}{4 x^{2} + 1} - \frac{12 x \operatorname{atan}{\left(2 x \right)}}{4 x^{2} + 1} - \operatorname{atan}^{2}{\left(2 x \right)} + \frac{1}{4 x^{2} + 1}\right) \sin^{3}{\left(3 x \right)}}{\left(4 x^{2} + 1\right)^{2}}\right) \sin{\left(3 x \right)}$$