/ / 1 \\
| 2*x*|--------- + 8*x||
| \atan(4*x) /|
16*|1 - ---------------------|
| 2 |
\ 1 + 16*x /
------------------------------
/ 2\
\1 + 16*x /*atan(4*x)
$$\frac{16 \left(- \frac{2 x \left(8 x + \frac{1}{\operatorname{atan}{\left(4 x \right)}}\right)}{16 x^{2} + 1} + 1\right)}{\left(16 x^{2} + 1\right) \operatorname{atan}{\left(4 x \right)}}$$
/ / 2 \\
| 3 | 1 64*x 12*x ||
32*|-24*x - --------- + 8*x*|-1 + ---------------------- + --------- + ---------------------||
| atan(4*x) | / 2\ 2 2 / 2\ ||
\ \ \1 + 16*x /*atan (4*x) 1 + 16*x \1 + 16*x /*atan(4*x)//
----------------------------------------------------------------------------------------------
2
/ 2\
\1 + 16*x / *atan(4*x)
$$\frac{32 \left(8 x \left(\frac{64 x^{2}}{16 x^{2} + 1} + \frac{12 x}{\left(16 x^{2} + 1\right) \operatorname{atan}{\left(4 x \right)}} - 1 + \frac{1}{\left(16 x^{2} + 1\right) \operatorname{atan}^{2}{\left(4 x \right)}}\right) - 24 x - \frac{3}{\operatorname{atan}{\left(4 x \right)}}\right)}{\left(16 x^{2} + 1\right)^{2} \operatorname{atan}{\left(4 x \right)}}$$