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