/ 280*x \
|-70*atan(4*x) - ---------|*sin(7*x) - 490*x*atan(4*x)*cos(7*x)
| 2|
\ 1 + 16*x /
$$- 490 x \cos{\left(7 x \right)} \operatorname{atan}{\left(4 x \right)} + \left(- \frac{280 x}{16 x^{2} + 1} - 70 \operatorname{atan}{\left(4 x \right)}\right) \sin{\left(7 x \right)}$$
/ / 2 \ \
| | 16*x | |
| 8*|-1 + ---------|*sin(7*x) |
| | 2| |
| / 4*x \ \ 1 + 16*x / |
70*|- 14*|--------- + atan(4*x)|*cos(7*x) + --------------------------- + 49*x*atan(4*x)*sin(7*x)|
| | 2 | 2 |
\ \1 + 16*x / 1 + 16*x /
$$70 \left(49 x \sin{\left(7 x \right)} \operatorname{atan}{\left(4 x \right)} - 14 \left(\frac{4 x}{16 x^{2} + 1} + \operatorname{atan}{\left(4 x \right)}\right) \cos{\left(7 x \right)} + \frac{8 \left(\frac{16 x^{2}}{16 x^{2} + 1} - 1\right) \sin{\left(7 x \right)}}{16 x^{2} + 1}\right)$$
/ / 2 \ / 2 \ \
| | 16*x | | 16*x | |
| 168*|-1 + ---------|*cos(7*x) 512*x*|-1 + ---------|*sin(7*x)|
| | 2| | 2| |
| / 4*x \ \ 1 + 16*x / \ 1 + 16*x / |
70*|147*|--------- + atan(4*x)|*sin(7*x) + ----------------------------- + 343*x*atan(4*x)*cos(7*x) - -------------------------------|
| | 2 | 2 2 |
| \1 + 16*x / 1 + 16*x / 2\ |
\ \1 + 16*x / /
$$70 \left(343 x \cos{\left(7 x \right)} \operatorname{atan}{\left(4 x \right)} - \frac{512 x \left(\frac{16 x^{2}}{16 x^{2} + 1} - 1\right) \sin{\left(7 x \right)}}{\left(16 x^{2} + 1\right)^{2}} + 147 \left(\frac{4 x}{16 x^{2} + 1} + \operatorname{atan}{\left(4 x \right)}\right) \sin{\left(7 x \right)} + \frac{168 \left(\frac{16 x^{2}}{16 x^{2} + 1} - 1\right) \cos{\left(7 x \right)}}{16 x^{2} + 1}\right)$$