4/3\
-15*atan |-|
\x/
------------
2 / 9 \
x *|1 + --|
| 2|
\ x / $$- \frac{15 \operatorname{atan}^{4}{\left (\frac{3}{x} \right )}}{x^{2} \left(1 + \frac{9}{x^{2}}\right)}$$
/ /3\ \
| 9*atan|-| |
3/3\ | 6 \x/ /3\|
30*atan |-|*|---------- - ----------- + atan|-||
\x/ | / 9 \ 2 / 9 \ \x/|
|x*|1 + --| x *|1 + --| |
| | 2| | 2| |
\ \ x / \ x / /
------------------------------------------------
3 / 9 \
x *|1 + --|
| 2|
\ x / $$\frac{30 \operatorname{atan}^{3}{\left (\frac{3}{x} \right )}}{x^{3} \left(1 + \frac{9}{x^{2}}\right)} \left(\operatorname{atan}{\left (\frac{3}{x} \right )} + \frac{6}{x \left(1 + \frac{9}{x^{2}}\right)} - \frac{9 \operatorname{atan}{\left (\frac{3}{x} \right )}}{x^{2} \left(1 + \frac{9}{x^{2}}\right)}\right)$$
/ 2/3\ /3\ 2/3\ /3\ \
| 108*atan |-| 12*atan|-| 21*atan |-| 108*atan|-| |
2/3\ | 2/3\ 18 \x/ \x/ \x/ \x/ |
90*atan |-|*|- atan |-| - ------------ - ------------ - ---------- + ----------- + ------------|
\x/ | \x/ 2 2 / 9 \ 2 / 9 \ 2|
| 2 / 9 \ 4 / 9 \ x*|1 + --| x *|1 + --| 3 / 9 \ |
| x *|1 + --| x *|1 + --| | 2| | 2| x *|1 + --| |
| | 2| | 2| \ x / \ x / | 2| |
\ \ x / \ x / \ x / /
------------------------------------------------------------------------------------------------
4 / 9 \
x *|1 + --|
| 2|
\ x / $$\frac{90 \operatorname{atan}^{2}{\left (\frac{3}{x} \right )}}{x^{4} \left(1 + \frac{9}{x^{2}}\right)} \left(- \operatorname{atan}^{2}{\left (\frac{3}{x} \right )} - \frac{12 \operatorname{atan}{\left (\frac{3}{x} \right )}}{x \left(1 + \frac{9}{x^{2}}\right)} + \frac{21 \operatorname{atan}^{2}{\left (\frac{3}{x} \right )}}{x^{2} \left(1 + \frac{9}{x^{2}}\right)} - \frac{18}{x^{2} \left(1 + \frac{9}{x^{2}}\right)^{2}} + \frac{108 \operatorname{atan}{\left (\frac{3}{x} \right )}}{x^{3} \left(1 + \frac{9}{x^{2}}\right)^{2}} - \frac{108 \operatorname{atan}^{2}{\left (\frac{3}{x} \right )}}{x^{4} \left(1 + \frac{9}{x^{2}}\right)^{2}}\right)$$