/|x| sign(x) 2*(-1 + |x|) \
-4*|--- - ------- + ---------------|
| 2 x 2|
\ x 1 + (-1 + |x|) /
------------------------------------
2
1 + (-1 + |x|)
$$- \frac{4 \left(\frac{2 \left(\left|{x}\right| - 1\right)}{\left(\left|{x}\right| - 1\right)^{2} + 1} - \frac{\operatorname{sign}{\left(x \right)}}{x} + \frac{\left|{x}\right|}{x^{2}}\right)}{\left(\left|{x}\right| - 1\right)^{2} + 1}$$
/ 2 \
||x| -1 + |x| sign(x) |x| 4*(-1 + |x|) *|x| (-1 + |x|)*|x|*sign(x) |
8*|--- + --------------- - ------- - --------------- + ------------------ - ---------------------- + DiracDelta(x)|
| 2 2 x 2 2 / 2\ |
| x 1 + (-1 + |x|) 1 + (-1 + |x|) / 2\ x*\1 + (-1 + |x|) / |
\ \1 + (-1 + |x|) / /
-------------------------------------------------------------------------------------------------------------------
/ 2\
x*\1 + (-1 + |x|) /
$$\frac{8 \left(\delta\left(x\right) + \frac{\left|{x}\right| - 1}{\left(\left|{x}\right| - 1\right)^{2} + 1} - \frac{\left|{x}\right|}{\left(\left|{x}\right| - 1\right)^{2} + 1} + \frac{4 \left(\left|{x}\right| - 1\right)^{2} \left|{x}\right|}{\left(\left(\left|{x}\right| - 1\right)^{2} + 1\right)^{2}} - \frac{\operatorname{sign}{\left(x \right)}}{x} - \frac{\left(\left|{x}\right| - 1\right) \left|{x}\right| \operatorname{sign}{\left(x \right)}}{x \left(\left(\left|{x}\right| - 1\right)^{2} + 1\right)} + \frac{\left|{x}\right|}{x^{2}}\right)}{x \left(\left(\left|{x}\right| - 1\right)^{2} + 1\right)}$$