/ /1\ \
| 2*atan|-| |
| /1\ 1 \x/ |
2*|2*atan|-| + ---------- - -----------|
| \x/ / 1 \ 2 / 1 \|
| x*|1 + --| x *|1 + --||
| | 2| | 2||
\ \ x / \ x //
----------------------------------------
3 / 1 \
x *|1 + --|
| 2|
\ x /
$$\frac{2 \left(2 \operatorname{atan}{\left(\frac{1}{x} \right)} + \frac{1}{x \left(1 + \frac{1}{x^{2}}\right)} - \frac{2 \operatorname{atan}{\left(\frac{1}{x} \right)}}{x^{2} \left(1 + \frac{1}{x^{2}}\right)}\right)}{x^{3} \left(1 + \frac{1}{x^{2}}\right)}$$
/ /1\ /1\ \
| 4*atan|-| 7*atan|-| |
| /1\ 3 3 \x/ \x/ |
4*|- 3*atan|-| - ---------- + ------------ - ------------ + -----------|
| \x/ / 1 \ 2 2 2 / 1 \|
| x*|1 + --| 3 / 1 \ 4 / 1 \ x *|1 + --||
| | 2| x *|1 + --| x *|1 + --| | 2||
| \ x / | 2| | 2| \ x /|
\ \ x / \ x / /
------------------------------------------------------------------------
4 / 1 \
x *|1 + --|
| 2|
\ x /
$$\frac{4 \left(- 3 \operatorname{atan}{\left(\frac{1}{x} \right)} - \frac{3}{x \left(1 + \frac{1}{x^{2}}\right)} + \frac{7 \operatorname{atan}{\left(\frac{1}{x} \right)}}{x^{2} \left(1 + \frac{1}{x^{2}}\right)} + \frac{3}{x^{3} \left(1 + \frac{1}{x^{2}}\right)^{2}} - \frac{4 \operatorname{atan}{\left(\frac{1}{x} \right)}}{x^{4} \left(1 + \frac{1}{x^{2}}\right)^{2}}\right)}{x^{4} \left(1 + \frac{1}{x^{2}}\right)}$$