/4\
atan|-|
\x/
-4*a *log(a)
------------------
2 / 16\
x *|1 + --|
| 2|
\ x /
$$- \frac{4 a^{\operatorname{atan}{\left (\frac{4}{x} \right )}}}{x^{2} \left(1 + \frac{16}{x^{2}}\right)} \log{\left (a \right )}$$
/4\
atan|-|
\x/ / 16 2*log(a) \
8*a *|1 - ----------- + ----------|*log(a)
| 2 / 16\ / 16\|
| x *|1 + --| x*|1 + --||
| | 2| | 2||
\ \ x / \ x //
------------------------------------------------
3 / 16\
x *|1 + --|
| 2|
\ x /
$$\frac{8 a^{\operatorname{atan}{\left (\frac{4}{x} \right )}}}{x^{3} \left(1 + \frac{16}{x^{2}}\right)} \left(1 + \frac{2 \log{\left (a \right )}}{x \left(1 + \frac{16}{x^{2}}\right)} - \frac{16}{x^{2} \left(1 + \frac{16}{x^{2}}\right)}\right) \log{\left (a \right )}$$
/4\
atan|-| / 2 \
\x/ | 1024 112 12*log(a) 8*log (a) 192*log(a) |
8*a *|-3 - ------------ + ----------- - ---------- - ------------ + ------------|*log(a)
| 2 2 / 16\ / 16\ 2 2|
| 4 / 16\ x *|1 + --| x*|1 + --| 2 / 16\ 3 / 16\ |
| x *|1 + --| | 2| | 2| x *|1 + --| x *|1 + --| |
| | 2| \ x / \ x / | 2| | 2| |
\ \ x / \ x / \ x / /
----------------------------------------------------------------------------------------------
4 / 16\
x *|1 + --|
| 2|
\ x /
$$\frac{8 a^{\operatorname{atan}{\left (\frac{4}{x} \right )}}}{x^{4} \left(1 + \frac{16}{x^{2}}\right)} \left(-3 - \frac{12 \log{\left (a \right )}}{x \left(1 + \frac{16}{x^{2}}\right)} + \frac{112}{x^{2} \left(1 + \frac{16}{x^{2}}\right)} - \frac{8 \log^{2}{\left (a \right )}}{x^{2} \left(1 + \frac{16}{x^{2}}\right)^{2}} + \frac{192 \log{\left (a \right )}}{x^{3} \left(1 + \frac{16}{x^{2}}\right)^{2}} - \frac{1024}{x^{4} \left(1 + \frac{16}{x^{2}}\right)^{2}}\right) \log{\left (a \right )}$$