/d d \
-|--(im(x))*im(x) + --(re(x))*re(x)|*acos(1)
\dx dx /
---------------------------------------------
3
|x|
$$- \frac{1}{\left|{x}\right|^{3}} \left(\Re{x} \frac{d}{d x} \Re{x} + \Im{x} \frac{d}{d x} \Im{x}\right) \operatorname{acos}{\left (1 \right )}$$
/ 2\
| /d d \ |
| 2 2 2 2 3*|--(im(x))*im(x) + --(re(x))*re(x)| |
| /d \ /d \ d d \dx dx / |
|- |--(im(x))| - |--(re(x))| - ---(im(x))*im(x) - ---(re(x))*re(x) + --------------------------------------|*acos(1)
| \dx / \dx / 2 2 2 |
\ dx dx |x| /
----------------------------------------------------------------------------------------------------------------------
3
|x|
$$\frac{1}{\left|{x}\right|^{3}} \left(\frac{3}{\left|{x}\right|^{2}} \left(\Re{x} \frac{d}{d x} \Re{x} + \Im{x} \frac{d}{d x} \Im{x}\right)^{2} - \Re{x} \frac{d^{2}}{d x^{2}} \Re{x} - \Im{x} \frac{d^{2}}{d x^{2}} \Im{x} - \frac{d}{d x} \Re{x}^{2} - \frac{d}{d x} \Im{x}^{2}\right) \operatorname{acos}{\left (1 \right )}$$
/ / 2 2 2 2 \\
| 3 /d d \ |/d \ /d \ d d ||
| /d d \ 9*|--(im(x))*im(x) + --(re(x))*re(x)|*||--(im(x))| + |--(re(x))| + ---(im(x))*im(x) + ---(re(x))*re(x)||
| 3 3 15*|--(im(x))*im(x) + --(re(x))*re(x)| 2 2 \dx dx / |\dx / \dx / 2 2 ||
| d d \dx dx / d d d d \ dx dx /|
|- ---(im(x))*im(x) - ---(re(x))*re(x) - --------------------------------------- - 3*--(im(x))*---(im(x)) - 3*--(re(x))*---(re(x)) + ---------------------------------------------------------------------------------------------------------|*acos(1)
| 3 3 4 dx 2 dx 2 2 |
\ dx dx |x| dx dx |x| /
-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
3
|x|
$$\frac{1}{\left|{x}\right|^{3}} \left(- \frac{15}{\left|{x}\right|^{4}} \left(\Re{x} \frac{d}{d x} \Re{x} + \Im{x} \frac{d}{d x} \Im{x}\right)^{3} + \frac{9}{\left|{x}\right|^{2}} \left(\Re{x} \frac{d}{d x} \Re{x} + \Im{x} \frac{d}{d x} \Im{x}\right) \left(\Re{x} \frac{d^{2}}{d x^{2}} \Re{x} + \Im{x} \frac{d^{2}}{d x^{2}} \Im{x} + \frac{d}{d x} \Re{x}^{2} + \frac{d}{d x} \Im{x}^{2}\right) - \Re{x} \frac{d^{3}}{d x^{3}} \Re{x} - \Im{x} \frac{d^{3}}{d x^{3}} \Im{x} - 3 \frac{d}{d x} \Re{x} \frac{d^{2}}{d x^{2}} \Re{x} - 3 \frac{d}{d x} \Im{x} \frac{d^{2}}{d x^{2}} \Im{x}\right) \operatorname{acos}{\left (1 \right )}$$