/ 120*x \
|20*atan(x*6) + ---------|*cos(atan(x*6)*4*x*5)
| 2|
\ 1 + 36*x /
$$\left(\frac{120 x}{36 x^{2} + 1} + 20 \operatorname{atan}{\left(6 x \right)}\right) \cos{\left(5 \cdot 4 x \operatorname{atan}{\left(6 x \right)} \right)}$$
/ / 2 \ \
| | 36*x | |
| 3*|-1 + ---------|*cos(20*x*atan(6*x))|
| 2 | 2| |
| / 6*x \ \ 1 + 36*x / |
-80*|5*|--------- + atan(6*x)| *sin(20*x*atan(6*x)) + --------------------------------------|
| | 2 | 2 |
\ \1 + 36*x / 1 + 36*x /
$$- 80 \left(5 \left(\frac{6 x}{36 x^{2} + 1} + \operatorname{atan}{\left(6 x \right)}\right)^{2} \sin{\left(20 x \operatorname{atan}{\left(6 x \right)} \right)} + \frac{3 \left(\frac{36 x^{2}}{36 x^{2} + 1} - 1\right) \cos{\left(20 x \operatorname{atan}{\left(6 x \right)} \right)}}{36 x^{2} + 1}\right)$$
/ / 2 \ / 2 \ \
| | 36*x | / 6*x \ | 36*x | |
| 45*|-1 + ---------|*|--------- + atan(6*x)|*sin(20*x*atan(6*x)) 108*x*|-1 + ---------|*cos(20*x*atan(6*x))|
| 3 | 2| | 2 | | 2| |
| / 6*x \ \ 1 + 36*x / \1 + 36*x / \ 1 + 36*x / |
320*|- 25*|--------- + atan(6*x)| *cos(20*x*atan(6*x)) + --------------------------------------------------------------- + ------------------------------------------|
| | 2 | 2 2 |
| \1 + 36*x / 1 + 36*x / 2\ |
\ \1 + 36*x / /
$$320 \left(\frac{108 x \left(\frac{36 x^{2}}{36 x^{2} + 1} - 1\right) \cos{\left(20 x \operatorname{atan}{\left(6 x \right)} \right)}}{\left(36 x^{2} + 1\right)^{2}} - 25 \left(\frac{6 x}{36 x^{2} + 1} + \operatorname{atan}{\left(6 x \right)}\right)^{3} \cos{\left(20 x \operatorname{atan}{\left(6 x \right)} \right)} + \frac{45 \left(\frac{6 x}{36 x^{2} + 1} + \operatorname{atan}{\left(6 x \right)}\right) \left(\frac{36 x^{2}}{36 x^{2} + 1} - 1\right) \sin{\left(20 x \operatorname{atan}{\left(6 x \right)} \right)}}{36 x^{2} + 1}\right)$$