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