/ /2 \\
| 16*atan|--||
| | 2||
2/2 \ | /2 \ 12 \x /|
16*atan |--|*|3*atan|--| + ----------- - -----------|
| 2| | | 2| 2 / 4 \ 4 / 4 \|
\x / | \x / x *|1 + --| x *|1 + --||
| | 4| | 4||
\ \ x / \ x //
-----------------------------------------------------
4 / 4 \
x *|1 + --|
| 4|
\ x /
$$\frac{16 \left(3 \operatorname{atan}{\left(\frac{2}{x^{2}} \right)} + \frac{12}{x^{2} \left(1 + \frac{4}{x^{4}}\right)} - \frac{16 \operatorname{atan}{\left(\frac{2}{x^{2}} \right)}}{x^{4} \left(1 + \frac{4}{x^{4}}\right)}\right) \operatorname{atan}^{2}{\left(\frac{2}{x^{2}} \right)}}{x^{4} \left(1 + \frac{4}{x^{4}}\right)}$$
/ 2/2 \ /2 \ 2/2 \ /2 \\
| 128*atan |--| 27*atan|--| 44*atan |--| 144*atan|--||
| | 2| | 2| | 2| | 2||
| 2/2 \ 24 \x / \x / \x / \x /| /2 \
64*|- 3*atan |--| - ------------ - ------------- - ----------- + ------------ + ------------|*atan|--|
| | 2| 2 2 2 / 4 \ 4 / 4 \ 2| | 2|
| \x / 4 / 4 \ 8 / 4 \ x *|1 + --| x *|1 + --| 6 / 4 \ | \x /
| x *|1 + --| x *|1 + --| | 4| | 4| x *|1 + --| |
| | 4| | 4| \ x / \ x / | 4| |
\ \ x / \ x / \ x / /
------------------------------------------------------------------------------------------------------
5 / 4 \
x *|1 + --|
| 4|
\ x /
$$\frac{64 \left(- 3 \operatorname{atan}^{2}{\left(\frac{2}{x^{2}} \right)} - \frac{27 \operatorname{atan}{\left(\frac{2}{x^{2}} \right)}}{x^{2} \left(1 + \frac{4}{x^{4}}\right)} + \frac{44 \operatorname{atan}^{2}{\left(\frac{2}{x^{2}} \right)}}{x^{4} \left(1 + \frac{4}{x^{4}}\right)} - \frac{24}{x^{4} \left(1 + \frac{4}{x^{4}}\right)^{2}} + \frac{144 \operatorname{atan}{\left(\frac{2}{x^{2}} \right)}}{x^{6} \left(1 + \frac{4}{x^{4}}\right)^{2}} - \frac{128 \operatorname{atan}^{2}{\left(\frac{2}{x^{2}} \right)}}{x^{8} \left(1 + \frac{4}{x^{4}}\right)^{2}}\right) \operatorname{atan}{\left(\frac{2}{x^{2}} \right)}}{x^{5} \left(1 + \frac{4}{x^{4}}\right)}$$